Words that start with I

Lists of words starting with I including those most commonly written / spoken, definitions, part of speech, and a very long list arranged by word length. Also includes countries that start with I, household items that begin with I, and more. Skip to the section you’re interested in by using the Table Of Contents, or scroll down to see more i words.

Most common / frequently used words that begin with I:

Top 10 most common written words ordered by frequency:
in is it into its if important information itself interest

Common written words in alphabetic order:
if important in information interest into is it its itself

Top 20 most common spoken I words by frequency:
i it in is it’s if i’m into i’ll i’ve i’d isn’t its idea it’ll interesting inside ice important involved

Glossary with part of speech and definition for the top 200 or so most frequently used I words:

ice	noun	water frozen in the solid state
icon	noun	(computer science) a graphic symbol (usually a simple picture) that denotes a program or a command or a data file or a concept in a graphical user interface
idea	noun	the content of cognition; the main thing you are thinking about
ideal	noun	the idea of something that is perfect; something that one hopes to attain
identical	adjective	exactly alike; incapable of being perceived as different
identify	verb	recognize as being; establish the identity of someone or something
identity	noun	the distinct personality of an individual regarded as a persisting entity
idiot	noun	a person of subnormal intelligence
idle	noun	the state of an engine or other mechanism that is idling
ignorance	noun	the lack of knowledge or education
ignorant	adjective	uneducated in general; lacking knowledge or sophistication
ignore	verb	refuse to acknowledge
illegal	adjective	prohibited by law or by official or accepted rules
illness	noun	impairment of normal physiological function affecting part or all of an organism
illusion	noun	an erroneous mental representation
illustration	noun	artwork that helps make something clear or attractive
image	noun	an iconic mental representation
imagination	noun	the formation of a mental image of something that is not perceived as real and is not present to the senses
imagine	verb	form a mental image of something that is not present or that is not the case
imitate	verb	reproduce someone’s behavior or looks
imitation	noun	the doctrine that representations of nature or human behavior should be accurate imitations
immediate	adjective	of the present time and place
immediately	adverb	without delay or hesitation; with no time intervening
immigrant	noun	a person who comes to a country where they were not born in order to settle there
immigration	noun	migration into a place (especially migration to a country of which you are not a native in order to settle there)
immoral	adjective	deliberately violating accepted principles of right and wrong
immortal	noun	a person (such as an author) of enduring fame
immortality	noun	the quality or state of being immortal
immune	noun	a person who is immune to a particular infection
impact	noun	the striking of one body against another
impartial	adjective	showing lack of favoritism
impatient	adjective	restless or short-tempered under delay or opposition
impatiently	adverb	with impatience; in an impatient manner
imperial	noun	a small tufted beard worn by Emperor Napoleon III
imperialism	noun	a policy of extending your rule over foreign countries
implement	noun	instrumentation (a piece of equipment or tool) used to effect an end
implicit	adjective	implied though not directly expressed; inherent in the nature of something
imply	verb	express or state indirectly
import	noun	commodities (goods or services) bought from a foreign country
importance	noun	the quality of being important and worthy of note
important	adjective	of great significance or value
imposition	noun	the act of imposing something (as a tax or an embargo)
impossibility	noun	incapability of existing or occurring
impossible	noun	something that cannot be done
impress	noun	the act of coercing someone into government service
impression	noun	a vague idea in which some confidence is placed
impressive	adjective	making a strong or vivid impression
imprisonment	noun	putting someone in prison or in jail as lawful punishment
improper	adjective	not suitable or right or appropriate
improvement	noun	a change for the better; progress in development
inability	noun	lack of ability (especially mental ability) to do something
inadequate	adjective	lacking the requisite qualities or resources to meet a task
inappropriate	adjective	not suitable for a particular occasion etc
incapable	adjective	(followed by `of’) lacking capacity or ability
incentive	noun	a positive motivational influence
inch	noun	a unit of length equal to one twelfth of a foot
incidence	noun	the relative frequency of occurrence of something
incident	noun	a single distinct event
inclination	noun	an attitude of mind especially one that favors one alternative over others
include	verb	have as a part, be made up out of
inclusion	noun	the state of being included
inclusive	adjective	including much or everything; and especially including stated limits
income	noun	the financial gain (earned or unearned) accruing over a given period of time
incompatible	adjective	not compatible
incomplete	adjective	not complete or total; not completed
inconsistent	adjective	displaying a lack of consistency
inconvenience	noun	an inconvenient discomfort
incorporation	noun	consolidating two or more things; union in (or into) one body
incorrect	adjective	not correct; not in conformity with fact or truth
incredible	adjective	beyond belief or understanding
incumbent	noun	the official who holds an office
indebted	adjective	owing gratitude or recognition to another for help or favors etc
indeed	adverb	in truth (often tends to intensify)
indefinite	adjective	vague or not clearly defined or stated
independence	noun	freedom from control or influence of another or others
independently	adverb	on your own; without outside help
index	noun	a numerical scale used to compare variables with one another or with some reference number
indication	noun	something that serves to indicate or suggest
indictment	noun	a formal document written for a prosecuting attorney charging a person with some offense
indifference	noun	unbiased impartial unconcern
indignant	adjective	angered at something unjust or wrong
indignation	noun	a feeling of righteous anger
indirect	adjective	having intervening factors or persons or influences
indispensable	adjective	not to be dispensed with; essential
individuality	noun	the quality of being individual
individually	adverb	apart from others
induce	verb	cause to arise
indulge	verb	give free rein to
indulgence	noun	an inability to resist the gratification of whims and desires
industrial	adjective	of or relating to or resulting from industry
industry	noun	the people or companies engaged in a particular kind of commercial enterprise
ineffective	adjective	not producing an intended effect
inequality	noun	lack of equality
inevitable	noun	an unavoidable event
infancy	noun	the early stage of growth or development
infantry	noun	an army unit consisting of soldiers who fight on foot
infection	noun	the pathological state resulting from the invasion of the body by pathogenic microorganisms
infectious	adjective	caused by infection or capable of causing infection
inference	noun	the reasoning involved in drawing a conclusion or making a logical judgment on the basis of circumstantial evidence and prior conclusions rather than on the basis of direct observation
inferior	noun	one of lesser rank or station or quality
inflammation	noun	a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat
inflammatory	adjective	characterized or caused by inflammation
inflation	noun	a general and progressive increase in prices
influence	noun	a power to affect persons or events especially power based on prestige etc
influential	adjective	having or exercising influence or power
inform	verb	impart knowledge of some fact, state or affairs, or event to
informal	adjective	not formal
information	noun	a message received and understood
infrastructure	noun	the basic structure or features of a system or organization
inherit	verb	obtain from someone after their death
inheritance	noun	hereditary succession to a title or an office or property
inhibition	noun	(psychology) the conscious exclusion of unacceptable thoughts or desires
initial	noun	the first letter of a word (especially a person’s name)
initiation	noun	a formal entry into an organization or position or office
injection	noun	the forceful insertion of a substance under pressure
injunction	noun	a formal command or admonition
injury	noun	any physical damage to the body caused by violence or accident or fracture etc.
injustice	noun	an unjust act
ink	noun	a liquid used for printing or writing or drawing
inland	adjective	situated away from an area’s coast or border
inner	adjective	located inward; – Leonard Bernstein; – David Denby; – A.R.Gurney,Jr.
innocent	noun	a person who lacks knowledge of evil
inquiry	noun	a search for knowledge
insane	adjective	afflicted with or characteristic of mental derangement
insanity	noun	relatively permanent disorder of the mind
inscription	noun	letters inscribed (especially words engraved or carved) on something
insect	noun	small air-breathing arthropod
insert	noun	a folded section placed between the leaves of another publication
inside	noun	the region that is inside of something
insignificant	adjective	not worthy of notice
insist	verb	be emphatic or resolute and refuse to budge
insistence	noun	continual and persistent demands
inspection	noun	a formal or official examination
inspector	noun	a high ranking police officer
inspiration	noun	arousal of the mind to special unusual activity or creativity
inspire	verb	heighten or intensify
instability	noun	an unstable order
install	verb	set up for use
installation	noun	the act of installing something (as equipment)
instinct	noun	inborn pattern of behavior often responsive to specific stimuli
institute	noun	an association organized to promote art or science or education
institution	noun	an organization founded and united for a specific purpose
institutional	adjective	relating to or constituting or involving an institution
instructive	adjective	serving to instruct or enlighten or inform
instrument	noun	a device that requires skill for proper use
instrumental	adjective	relating to or designed for or performed on musical instruments
insufficient	adjective	of a quantity not able to fulfill a need or requirement
insulin	noun	hormone secreted by the isles of Langerhans in the pancreas; regulates storage of glycogen in the liver and accelerates oxidation of sugar in cells
insurance	noun	promise of reimbursement in the case of loss; paid to people or companies so concerned about hazards that they have made prepayments to an insurance company
insured	noun	a person whose interests are protected by an insurance policy; a person who contracts for an insurance policy that indemnifies him against loss of property or life or health etc.
integer	noun	any of the natural numbers (positive or negative) or zero
integral	noun	the result of a mathematical integration; F(x) is the integral of f(x) if dF/dx = f(x)
integrate	verb	make into a whole or make part of a whole
integration	noun	the action of incorporating a racial or religious group into a community
integrity	noun	an undivided or unbroken completeness or totality with nothing wanting
intellectual	noun	a person who uses the mind creatively
intelligence	noun	the ability to comprehend; to understand and profit from experience
intelligent	adjective	having the capacity for thought and reason especially to a high degree
intend	verb	have in mind as a purpose
intense	adjective	possessing or displaying a distinctive feature to a heightened degree
intensity	noun	the amount of energy transmitted (as by acoustic or electromagnetic radiation)
intentional	adjective	characterized by conscious design or purpose
interact	verb	act together or towards others or with others
interaction	noun	a mutual or reciprocal action; interacting
intercourse	noun	communication between individuals
interest	noun	a sense of concern with and curiosity about someone or something
interface	noun	(chemistry) a surface forming a common boundary between two things (two objects or liquids or chemical phases)
interfere	verb	come between so as to be hindrance or obstacle
interim	noun	the time between one event, process, or period and another
intermediate	noun	a substance formed during a chemical process before the desired product is obtained
internal	adjective	happening or arising or located within some limits or especially surface
interpret	verb	make sense of; assign a meaning to
interpretation	noun	a mental representation of the meaning or significance of something
interpreter	noun	someone who mediates between speakers of different languages
interrupt	noun	a signal that temporarily stops the execution of a program so that another procedure can be carried out
intersection	noun	a point where lines intersect
intervene	verb	get involved, so as to alter or hinder an action, or through force or threat of force
intervention	noun	the act of intervening (as to mediate a dispute, etc.)
interview	noun	the questioning of a person (or a conversation in which information is elicited); often conducted by journalists
intestinal	adjective	of or relating to or inside the intestines
intolerable	adjective	incapable of being put up with
intricate	adjective	having many complexly arranged elements; elaborate
intrinsic	adjective	belonging to a thing by its very nature; – John Dewey
introduce	verb	cause to come to know personally
introduction	noun	the act of beginning something new
introductory	adjective	serving to open or begin
intuition	noun	instinctive knowing (without the use of rational processes)
intuitive	adjective	spontaneously derived from or prompted by a natural tendency
invalid	noun	someone who is incapacitated by a chronic illness or injury
invaluable	adjective	having incalculable monetary, intellectual, or spiritual worth
invasion	noun	the act of invading; the act of an army that invades for conquest or plunder
invasive	adjective	relating to a technique in which the body is entered by puncture or incision
invention	noun	the creation of something in the mind
inventor	noun	someone who is the first to think of or make something
inventory	noun	a detailed list of all the items in stock
inverse	noun	something inverted in sequence or character or effect
invest	verb	make an investment
investigate	verb	investigate scientifically
invisible	adjective	impossible or nearly impossible to see; imperceptible by the eye
invitation	noun	a request (spoken or written) to participate or be present or take part in something
invite	noun	a colloquial expression for invitation
involuntary	adjective	not subject to the control of the will; ; ; ; – John F.Kennedy
involve	verb	connect closely and often incriminatingly
inward	adjective	relating to or existing in the mind or thoughts
ion	noun	a particle that is electrically charged (positive or negative); an atom or molecule or group that has lost or gained one or more electrons
iron	noun	a heavy ductile magnetic metallic element; is silver-white in pure form but readily rusts; used in construction and tools and armament; plays a role in the transport of oxygen by the blood
irrelevant	adjective	having no bearing on or connection with the subject at issue
irresistible	adjective	impossible to resist; overpowering
irrigation	noun	supplying dry land with water by means of ditches etc
irritation	noun	the psychological state of being irritated or annoyed
island	noun	a land mass (smaller than a continent) that is surrounded by water
isle	noun	a small island
isolation	noun	a state of separation between persons or groups
issue	noun	an important question that is in dispute and must be settled
item	noun	a distinct part that can be specified separately in a group of things that could be enumerated on a list
ivory	noun	a hard smooth ivory colored dentine that makes up most of the tusks of elephants and walruses

Questions and Answers:

Q: What is the longest I word and how many letters does it have in it?
A: The word incontrovertiblenesses is 22 letters long.

Q: What is the shortest word that starts with I?
A: The letter “i” is also often used as a word in sentences, and at only one character long, it is a very short word.

Q: What countries start with the letter I?
A: Iceland, India, Indonesia, Iran, Iraq, Ireland, Israel, Italy.

Q: What are some household items / things / objects that start with the letter I?
A: ice cube tray, incense, Irish Spring soap, iron, ironing board, Ivory soap

I words by number of letters:

More complete list, by word length:

2 letter words beginning with i:

i

2 letter words beginning with i:

ia id if in io is it

3 letter words beginning with i:

ice ich icy ihp ike ile ilk ill imp ink inn ion ire irk ism iso its ivy

4 letter words beginning with i:

iamb iare ibex ibis iced icho icky icon idea idee idem ides idle idol ieee iffy iggs ikon ilea ilex ilot imam imit impi inch inky inly insp into iota iris irok iron isle itch item itmo iuds iwis ixia

5 letter words beginning with i:

icaco iceni ichor icily icing ictus idant ideal idiom idiot idled idler idyll igloo ignis ihram ijmaa ileac ileum ileus iliac iliau ilium image imago imams imbed imbue imide imine immix immun impel imply imshi inane inapt inbow incas incle incur incus index indiv indue inept inert infer infix infra ingle

ingot inion inken inkle inlay inlet inner input inrub inrun insea inset inter intnl intro inure inurn inwit iodic ionic irade irate irbis irene ireos irked irons irony isaac ising islet issue istle itchy ivied ivory ixtle izard

6 letter words beginning with i:

iambic iambus iatric ibidem icebox icecap iceman icicle iciest iconic ideate idesia idiocy iditol idlish idolum igname ignite ignore iguana ilexes ilices illume imaged imager imaret imbeds imbibe imbrue imbute imdtly immesh immews immiss immune immure impact impair impala impale impark impart impede impend impies impish impone import impose impost improv

impugn impure impute inamia inarch inbent inbits inborn inbred incage incant incase incept incest incise incite income incorp incult incurs incuse indaba indeed indene indent indico indict indign indigo indite indium indole indoor induce induct indult induna infamy infang infant infare infect infest infirm inflow influx infold inform infuse ingate ingest ingram ingulf inhale

inhaul inhere inhume inions inject injure injury inkers inknot inlaid inland inless inlier inmate inmesh inmost innate inning inpour inroad inrush insane insect inseem insert inship inside insist insole insoul inspan instal instar instep instil insula insult insure intact intake intend intent intern intima intine intisy intone intort intron intuit inulin invade invars invent invert invest invite invoke

inward inwits inwrap iodate iodide iodids iodine iodism iodize iodous iolite ionium ionize ionone iotize ipecac ireful irenic iridal iridic irises iritic iritis ironic irrupt isatin island isling isobar isodef isomer isopod isthmi italic itself iwwort ixodic izzard

7 letter words beginning with i:

iceberg iceboat icefall iceless icepick ichnite icicles iciness ickiest icterus ideally ideatum identic idiotic idlemen idolism idolist idolize idoneal idyllic igneous igniter ignitor ignoble ikebana ileitis illegal illicit illness illogic ilocano imagery imagine imagism imamate imbauba imitate immasks immense immerge immerse immoral immures impanel imparks imparls impasse impaste impasto impeach impearl

imperia imperil impetus impiety impinge impings impious implant implead implied implode implore impound impower impresa impress imprest imprint improve impulse inaners inanity inbeing inboard inbound inbreed inbring incants incaved incense inchers incipit incised incisor incivil incline inclose include incomer incrust incubus incudes incurve indexer indican indices indicia indoors indorse indoxyl indraft indrawn

indulge indwell inearth inertia inexact infancy infanta infante infarct infaust inferno infidel infield infills inflame inflate inflect inflict infract infuses ingates ingenit ingenue ingesta ingoing ingraft ingrain ingrate ingress ingross ingroup ingrown inhabit inhaler inhance inhauls inherit inhibit inhuman inhumed initial initive injured injures injuria inkblot inkhorn inkings inkling inkster inkwell inmates innards innerve innings innyard inphase

inquest inquire inquiry insense inshore insider insight insipid insnare inspect inspire install instamp instant instars instate instead insteam instill insular insulin insured insurer integer inteind intense interim interne intreat introit intrude intrust intwine intwist inutile invalid inveigh invents inverse inverts invoice invoked involve inwards inweave inwraps inwrapt iodines iodisms iodizer ionised ionogen ipomoea iracund irenica irenics iridise iridium iridize

irising irksome ironing ironist ironman isagoge isatine ischial ischium isoamid isobath isochor isodoma isogamy isolate isoline isomere isomery isonomy isopods isotone isotope isotron isoxime issuant isthmus itching itemize iterate ivories ivylike

8 letter words beginning with i:

iceblink icebound icehouse icequake ichthyic icosteid idealise idealism idealist ideality idealize ideation identify identity ideogram ideology ideotype idiolect idiosome idiotish idiotism idiozome idlesses idocrase idolater idolatry idylists idyllist ignified ignition ignitron ignominy ignorant iguanian illation illinium illiquid illogics illumine illusion illusive illusory illutate ilmenite imagilet imaginal imbathes imbecile imbodies imitable imitator

immanely immanent immanity immature immenser immersed imminent immingle immobile immodest immolate immortal immotile immunity immunize impacted impacter impaired impaling impalmed imparity impeding impeller impellor imperial imperite imperium impetigo impletes implicit implodes implored implorer impolder impolicy impolite imposing impostor imposure impotent imprimis imprison improper improves impudent impugned impunity impurity inaction inactive inasmuch incavate incavern incentor inchases

inchmeal inchoate inchpins inchworm incident incisely incision incisive incisure inclined included incocted incogent incoming increase increate incubate incumber indamine indebted indecent indented indentee indevout indexers indexing indicant indicate indicias indienne indigene indigent indigoid indirect indocile indolent indorsee indrises induciae inductee inductor indulger induline indurate indurite indusium industry indwells inearths inedible inedited inequity inerrant

inertiae inertias inessive inexpert infamize infamous infantly infantry infecter infecund inferiae inferial inferior infernal infernos infinite infinity infirmer inflated inflexed influent inforces informal informed informer infrared infringe infrugal infumate infusion infusive ingather ingrowth inguinal inhalant inherent inhesion inhumane inimical iniquity initiate injector inkberry inkindle inkstand inkstone inlawing innatism innerves innocent innovate innuendo inoblast inoculum inosites inositol insanify insanity inscapes inscribe

insected insecure inserted inserter inshrine insignia insnarer insolate insolent insomnia insomuch insphere inspired inspirit instable instance instancy instants instinct instruct insulate intaglio intarsia integral intended intender interact intercom intercut interest interior interlap interlay intermat intermet intermit intermix internal internat internee interpol interrex intertex intertie interval intifada intimacy intimate intimism intimist intitule intonate intrados intrants

intrench intrepid intrigue intromit introrse intubate intwists inundate inurbane invalids invasion invasive inveigle inventor inverses inversor inverter inviting invocate involute involved inwardly iodoform iotacism iotizing iranians ironbark ironclad ironlike ironware ironwood ironwork irrigate irritant irritate iscariot islanded islander isobaric isocheim isochors isocline isocracy isogloss isogonic isohexyl isolated isolator isomeric isometry isomorph isopleth isoprene isospins

isospore isostasy isothere isotherm isotonic isozymic issuable issuance isthmial isthmian itacisms itemized iterable ivybells

9 letter words beginning with i:

icestones ichneumon ichnology ichthyoid ichthyses iconising iconizing iconoduly iconology idealizes identical identifer ideograph ideologue ideomotor idioblast idiocrasy idiomatic idiopathy idiophone idioplasm idiotized idolizing idyllists ignescent ignoramus ignorance iguanodon ileocecal ileostomy iliacuses illegible illiberal illogical imaginary imaginist imagistic imbalance imbarring imbecilic imborders imbricate imbroglio imbursing imidazole iminourea imitation immanence immediacy immediate immensity

immersing immersion immeshing immigrant immigrate imminence immitting immixture immovable immutable impacable impaction impainted impanated impartial impassion impassive impatiens impatient impeccant impedance impellent impendent impending imperator imperfect imperials imperiled imperious impeticos impetrate impetuoso impetuous impetuses impleader implement impletion implicate implicity implorers imploring implosion implosive impoliter impolitic important importune imposters impostume imposture impotence

imprecate imprecise impressor improbity impromptu improvise improviso imprudent impudence impulsing impulsion impulsive imputable imputedly inability inaidable inaidible inamorata inamorato inangular inanimate inanities inanition inaudible inaudibly inaugural inbending inbreathe incandent incapable incarnate incaution incensors incensory incenters incentive inception inceptive incessant incidence incipient incipitur incitants inclement inclining inclusion inclusive incognito incommode incomplex incondite incorpses

incorrect incorrupt increases increment incretion incrossed incubator inculcate inculpate incumbent incurable incurious incurrent incursion incursive incurvate indagates indecency indecorum indelible indemnify indemnity indention indenture indevoted indexable indexings indicator indicting indiction indigence indignant indignity indigotin indiguria indispose indolence indomable indoxylic inducible inductile inducting induction inductive indulgent indulging indurates induviate inebriant inebriate inebriety ineffable inelastic inelegant inerrable

inethical infamises infantile infantine infatuate infection infective infeoffed inference infertile infielder infirmary infirmity inflation inflexion inflictor influence influenza infobahns informant informers infuneral infuriate infuscate infusible ingenious ingenuity ingenuous inglenook ingleside ingrained ingresses ingrossed ingrowing ingulphed inhabited inhabiter inhalator inhearses inherence inherited inheritor inhibitor inimicous initiates injection injectors injurious injustice inlayings inlooking innermost innerness innervate innkeeper innocence

innocency innocuity innocuous innoxious inoculant inoculate inodorous inorganic inotropic inpatient inquiline inquiring insapient insatiate inscience insconced insectile insensate insertion inshining insidious insincere insinking insinuate insipient insistent insolence insoluble insolvent insomniac inspector instanter instantly instigate instiller institute insulator insulting insurable insurance insurgent integrals integrand integrant integrate integrity intellect intendant intensify intension intensity intensive

intention intentive interbody interbred intercede intercept interclan intercome intercrop intercuts interdict interface interfere interfile interflow interfuse interject interjoin interknit interlace interlard interleaf interline interlink interlock interlope interlude intermats intermelt interment intermesh intermise internals internees internist internode interplay interpose interpret interrupt intersect intershop intertask interteam intervale intervary intervene interview interwork intestate intestine

intimados intorsion intrashop intricacy intricate intrigant intrinsic introduce introitus introject introrsal introvert intruding intrusion intrusive intuition intuitive intumesce inturning inunction inutility invariant invasions inveagles invective inveigled inveigler inveigles invenient invention inventive inventory inversely inversion inversive invertase inverters invertive invidious inviolacy inviolate invisible invocator involucel involucre involuted involving inwrought iodhydrin iodometry ionopause irascible irascibly irateness irenicism irenology

iridotomy irisation ironbarks ironbound ironising ironsides ironsmith ironstone ironworks iroquoian irradiant irradiate irregular irrigates irriguous irritable irritated irruption irruptive isabellas isagogics isallobar isenergic isinglass isoapiole isochores isoclinal isoclines isocrymic isodontal isoemodin isogamete isogonies isogynous isohydric isoionone isolating isolation isologous isologues isomerism isomerize isomerous isometric isoniazid isooctane isophotes isopleths isopropyl isosceles isosteric isotomous

isotropic ispraynik isthmiate italicize itamalate itemizers itherness itinerant itinerary itinerate itinerite

10 letter words beginning with i:

iatrogenic icebreaker ichthyoids ichthyosis ickinesses iconoclasm iconoclast iconolatry iconoscope icosasemic idealistic ideational idempotent identikits ideography ideologise ideologist idiocratic idiothermy idiotypies idolatrize idolatrous iliocostal iliopelvic illaudable illegality illegalize illhumored illiteracy illiterate illuminant illuminate illuminati illuminism illustrate imaginable imaginably imaumbarah imbalances imbarkment imbecilely imbecility imbibition imbroglios immaculate immanental immaterial immemorial immiscible immobilise immobility

immobilize immoderacy immoderate immolation immoralist immorality immortable immortelle immovables immunology immuration impalpable impaludism impanation imparadise imparlance imparsonee impartible impassable impassible impatience impeccable impediment impeditive impenitent impersonal impervious implacable impledging implexions implexuous implicants implicated impoisoner importance imposition impossible impossibly impotently impoverish impregnate impresario impressers impressing impression impressive impressure imprimatur imprinting improbable improvised impudicity impuissant impunities

imputation inaccuracy inaccurate inactivate inactively inadequate inamoratas inamoratos inangulate inanitions inapposite inaptitude inartistic inaugurate inauration inbreeding incandesce incapables incapacity incarnates incautious incendiary incestuous inchoation incidences incidental incidently incinerate incitement incitingly incivility inclinable inclinator incogitant incognitas incoherent incomeless incomplete inconstant incrassate increasing incredible increscent incubation inculpable inculpably incumbency incunabula incurrence indagatory indecenter indecision

indecisive indecorous indefinite indelicacy indelicate indentment indication indicators indicatory indictable indictment indigenous indigested indilatory indirubine indiscreet indiscrete indisposed indistinct individual individuum indocility indophenol inducement inductance indulgence indulgiate induration industrial ineconomic ineducable inefficacy inelegance inelegancy ineligible ineloquent ineludible ineptitude inequality inerasable inevasible inevitable inexertion inexistent inexorable inexpiable inexpiably inexplicit infallible infamation infamizing infantlike infarction infatuated infausting infeasible infectible

infectious infeftment infelicity inferiorly infidelity infighting infiltrate infinitely infinitive infinitude inflatable inflatuses inflection inflexible inflicters inflicting infliction influenzic infrabasal infraction infrasonic infrequent infringing infumation infusorian ingeminate ingenerate inglorious ingracious ingrateful ingratiate ingredient ingressive inhabitant inhalation inharmonic inhausting inheritrix inhibition inhibitors inhibitory inhumanity inhumation inimitable iniquitous initialize initiation initiatory injunction inkhornize inmarriage innkeepers

innominate innovation innumerate innumerous inoculable inoperable inordinate inosculate inquestual inquietude inquisitor insalivate insanitary insatiable inscrolled insecurity insecution inselbergs inseminate insensible insentient insightful insinuated insipience insistence insistency insobriety insociable insolation insolvable insolvency insouciant inspection inspissate installing instalment instancies instigated instituter institutor instructor instrument insufflate insularize insulation insultable insurances insurgence insurgency insweeping intactible intangible integrated integrator integument intemerate

intendance intendancy intendment intenerate intensated interblend interbrain interbreed intercalar interchase intercheck intercross interested interfaith interferon interfiber interfluve intergrade interiorly interlaces interlayer interleave interlocus interloped interloper interlunar intermalar intermarry intermedia intermezzo intermural intermures internment internodal internship interphase interphone interplead interpoint interramal interreges interspace interstate interstice intertidal intertrial intertwine intertwist interunion interurban intervalic intervalla interweave intestinal intimating intimidate intinction

intolerant intonation intoxicant intoxicate intramural intranidal intrastate intrigante intrigants intriguant introspect introverse intuitions intumulate inundation invaginate invalidate invalidism invalidity invaluable invariable invariancy inventible inveracity invertedly investient investment inveteracy inveterate invigilate invigorate invincible inviolable invitation invitatory invocation involucrum involution inwardness iodoethane ionization ionosphere iotacismus irefulness iridaceous iridectome iridectomy iridescent iridosmine irisations ironfisted

ironhanded ironmaster ironmonger ironworker irradiance irradiates irrational irredeemed irrelevant irreligion irremeable irresolute irreverent irrigation irrigators irritating irritation isadnormal ischialgic isentropic isoaminile isocamphor isocarpous isocephaly isochimals isochronal isochroous isocyanide isodontals isodontous isodynamic isoleucine isomerized isometrics isonitrile isopiestic isosporous isostemony isothermal italicises itinerancy itineraria

11 letter words beginning with i:

ichnography ichthyolite ichthyology ichthyornis ichthyosaur iconography iconologies iconostasis icosahedron ideologizes ideophonous idioglossia idiographic idiomorphic idioretinal idiospastic ignominious iliofemoral illegalised illicitness illimitable illogically illuminance illuminates illuminator illusionary illusionism illusionist illustrator illustrious illuviating illuviation imagination imbrication imbroccatas immaterials immediately immedicable immigration immitigable immobilised immobiliser immobilises immortality immortalize immunogenic impalements impassioned impatiently impatronize impeachable

impeachment impecunious impedimenta impedometer imperatrice imperforate imperialism imperiality impermanent impermeable impersonate impertinent imperviable impetuosity impignorate implacental implausible implemental implication implicatory importation importunacy importunate importuning importunity impostorism impractical imprecating imprecation imprecisely imprecision impregnable impressible impressment imprintings improcreant impropriate impropriety improvement improvident imprudently inabusively inadvertent inadvisable inalienable inalterable inalterably inappetence inaptnesses inattention inattentive inbetweener incalescent incantation incantatory incapacious incarcerate incardinate incarnadine

incarnation incertitude incessantly incinerator inclemently inclination inclinatory incoercible incogitable incognizant incoherence incommodity incompetent incompliant incomposure incongruent incongruity incongruous inconsonant incontinent incorporate incorporeal incrassates increasedly incredulity incredulous incriminate incunabulum incurvature indeciduous indefinable indefinites indehiscent indemnified indemoniate indentation independent indepravate indicolites indifferent indigenized indigestion indigestive indignantly indignation indignatory indirection indiscussed individuate indivisible indomitable indonesians indubitable inductances indulgingly induplicate industrials industrious ineducation ineffective

ineffectual inefficient ineluctable inemendable inemotivity inenarrable inequitable inescapable inessential inestimable inexcusable inexecution inexistence inexpansive inexpedient inexpensive inextension infamonises infanticide infantilism infantryman infatuation infeodation inferential infestation infestivity infeudation infinituple inflammable influencers influential informality information infrabuccal infracostal infractions infralabial infrangible infrequency infusionism infusorians ingathering ingeminates ingenerable ingratitude ingredience ingressives ingrownness ingurgitate inhabitancy inheritable inheritance inirritable initializes injucundity injudicious

innobedient innumerable innutrition inoculation inoffensive inofficious inopportune inquisition inquisitive inquisitory insalivates inscription inscrutable insectarium insecticide insectivore inseminates insensitive inseparable insessorial inseverable insincerity insinuating insinuation insipidness insomnolent insouciance inspiration inspiratory inspiringly inspissated instability installment instigation instinctive institution institutive institutors instruction instructive insuperable integration intelligent intemperate intendencia intensating intensifier intentional interabangs interacinar interaction interactive interatomic interbanded interbedded intercalary intercalate intercedent interceders

interceptor intercessor interchange interchased intercolumn intercostal intercourse interdental interdepend interdining interesting interfluent interfluous interinsert interjacent interjector interlapped interleaves interlinear interlining intermeddle intermingle internalize internecine internuncio interocular interoffice interplants interpolate interpolity interpreter interracial interradial interregnum interrelate interrogate interrogees interrupted interrupter interseamed intershaded intersperse intertarsal intervalled intervaried interveinal interviewee interviewer intinctions intolerable intolerance

intolerants intoxicable intoxicated intractable intradermal intraseptal intravenous intricacies intriguants introjected introverted introvision intrusively intuitional intuitivism intumescent inverminate investigate investiture investments invigilated invigorated invocations involuntary involutions involvement iodoprotein ionospheres iridescence iridorhexis irradiation irradicable irrecusable irredentist irreducible irreduction irrefutable irrelevance irrelevancy irreligious irremovable irreparable irresoluble irretentive irreverence irrevocable irrevocably isallobaric isobilianic isochronism isochronize isochronous isoclinally isodiaphere isodynamous isoelectric

isolecithal isomagnetic isometrical isometropia isomorphism isoniazides isoparaffin isopropanol isoxsuprine itacolumite italianiron italianizes itatartrate ithyphallic ithyphallus

12 letter words beginning with i:

ichorrhaemia ichthyocolla ichthyosaurs iconoclastic iconophilism ideographies idiosyncrasy idolatrously idoxuridines ignitibility ignorantness illegitimacy illegitimate illogicality illuminating illumination illusionable illustration imbibitional imitationist immanentists immeasurable immediatisms immensurable immersionism immethodical immigrations immiserizing immoderation immortalised immortaliser immortalized impannelling imparadising impardonably imparkations impedibility impenetrable impenitently imperception imperceptive impercipient imperfection imperfective imperishable impersonally impertinence impeticossed impierceable implantation imponderable

importunance impoverished impregnatory imprevisible imprisonment improducible impromptuist improvisator impugnations inacceptable inaccessible inactivating inactiveness inadjustable inadmissible inadvertence inadvertency inapplicable inarticulate inartificial inattackable inaugurators inauspicious incalculable incandescent incapacitate incarnadines incatenation incendiarism incensurably incentivizes incestuously incidentally incinerating inclinograph inclinometer incogitantly incoherences incommodious incommutable incomparable incompatible incompetence incompletion incomposedly incomputable inconcinnity inconclusive inconformity inconsequent inconsistent

inconsolable inconsumable inconvenient inconversant incoordinate incorporable incorporated incorporator incorporeity incorrigible incorrigibly incorruption incrassating incrustation incubational incumberment incumbrances incunabulist incursionist indebtedness indeclinable indefeasible indefectible indefensible indelectable indeliberate indelicately indemnifiers independence independency indeprivable indetermined indicational indifference indigenously indigestible indignifying indiscipline indiscretion indisputable indissoluble indivertible individually indoctrinate ineffability ineffaceable inefficience inefficiency inequalities ineradicable inerrability inescutcheon inessentials inexactitude inexpectedly inexperience inexplicable inexpressive inexpugnable

inexpungible inextensible inextirpable inextricable infantilisms infantilizes infelicitous infiltration infinitizing inflamedness inflammation inflammatory inflationary inflationism inflectional infomercials infrabestial inframontane infringement infundibulum infusionisms ingeminating ingratiating ingravescent inharmonical inharmonious inhospitable innovational inobservance inohymenitic inoppugnable inquietation inquinations insalubrious insculptures insectmonger insemination insomnolence insouciances inspectorate installation instantiated instauration instellatinn instillation instillatory instructible instructions instrumental insufferable insufficient insufflators insulination insupposable insurrection

intactnesses intellection intellectual intelligence intelligency intelligible intemeration intemperance intemperants intenability intenerating intensifiers interaccused interanimate intercalates interception interceptive intercession intercessory interchoking interconnect intercreedal intercrosses intercurrent interdespise interdiction interdictory interference interfertile interglacial intergrafted interjection interlineate interlobular interloculli interlocutor intermarries intermeddler intermediacy intermediary intermediate intermembral intermention interminable interminably intermission intermittent intermixedly intermixture internalized internuncial interoceptor interpellant

interpellate interpleaded interpleader interpledged interpreters interpretive interprocess interrelated interrogator interrupters interruption intersection interspersal interstadial interstellar interstimuli interstitial intertexture intertwining intervalleys intervarsity intervarying intervenient intervention intervocalic interweavers intolerances intoxicating intoxication intracardiac intracranial intramundane intransigent intransitive intranuclear intrapsychic intrauterine introduction introductory introjection introjective intromission introversion intuitionism intumescence intussuscept invagination inventorying invertebracy invertebrate investigable investigator inveteration invitatories involucelate involutional invulnerable iracundulous

irredeemable irreformable irrefragable irregeneracy irregularity irrelievable irremediable irremissible irrepealable irrepealably irresilience irresistible irresolution irresolvable irresolvably irrespective irrespirable irresponsive irreversible irritability ischiopodite ischiosacral isochromatic isochronical isochronised isochronisms isodiametric isolationism isolationist isorosindone isosaccharic isothenurias italianating

13 letter words beginning with i:

iatrotechnics ichneumonized iconomaticism idiochromatin idiographical idiorrhythmic illiberalises illuminometer imaginational imagistically immaterialism immateriality immaterialize immediateness immeritorious immortalising immovableness immunogenesis immunogenetic immunotherapy impalpability imparipinnate impassability imperatorship imperceptible imperfectible imperfectious imperialistic impermissible impersonalism impersonality impersonalize impersonators imperturbable impetuousness impossibility impracticable impregnations imprejudicate impressionism impressionist improbability improvisation improvisatory imprudentness impulsivities inactivations inadvertantly inanimateness inappertinent inappreciable

inappropriate inarticulated inarticulates incandescence incandescents incardination incendiarisms incentivizing inclusiveness incombustible incommunicado incompentence inconceivable inconclusible incondensable incondensible inconsecutive inconsiderate inconsistence inconsistency inconspicuous incontestable inconvenience inconveniency inconvertible inconvincible incorporating incorporation incorporators incorruptible indefatigable independently indescribable indeterminacy indeterminate indeterminism indevirginate indiscernible indiscussable indispensable indispensably indisposition indistinctive indistortable individualism individualist individuality individualize individuation indoctrinates inductilities inductivities industrialism industrialist industrialize inefficacious inexhaustible inexorability

inexperienced inexplainable inexpressible inextensional infallibilism infamiliarity infinitesimal inflorescence infracotyloid infrastipular inhabitations inhospitality injudiciously inobservation inoperculates inopportunity inquisitorial insectivorous insensibility insignificant inspirational inspiritingly instantaneity instantaneous instantiation instigatingly institutional instrumentary insubordinate insubstantial insufficiency insupportable insupportably insusceptible integumentary intelligencer interaccusing intercalating intercalation intercalatory intercellular interclavicle intercombined intercostally intercuspidal interdictions interdigitate interdominion interexchange interlaminate interlanguage interlocution interlocutory interlocutrix interlunation intermarriage intermination

intermingling interminister intermissions international internuptials interosculate interpleading interpolation interposition interpressure interpretably interproximal interramicorn interrelation interrogation interrogatory intersegments intersidereal intersocietal interstratify intertraffics interwrapping intimidations intradermally intrafissural intramarginal intramorainic intramuscular intransigence intransigents intraperineal intratelluric intravasation intricateness intrinsically introgression introspection intuitionisms investigation invisibleness invitrifiable iridectomized iridoavulsion irrationalism irrationality irreclaimable irrecognition irrecoverable irrefrangible irrefrangibly irrenunciable irrepentantly irreplaceable irrepressible irresponsible irresponsibly irretrievable

irretrievably ischiofemoral isoagglutinin isoclinically isodimorphism isoelectronic isoperimetric italicization

14 letter words beginning with i:

iatrochemistry ichthyolatrous ichthyophagian iconomatically identification idiopsychology illegalisation illegitimatise illiberalizing illuminability illusivenesses illustrational imitablenesses immanifestness immarcibleness immaterialness immiserization immunogenetics immunoreaction imparisyllabic impassibilibly impermeabilize imperscrutable impertransible imperturbation implausibility imponderabilia importableness imposingnesses impossibleness impregnability impressionable impressionably improvableness improvvisatore inagglutinable inalienability inapprehensive inapproachable incommensurate incommunicable incomprehended incompressible inconceivables inconcinnities inconscionable inconsiderable inconsiderably inconsistences incontinencies incontrollable

inconvenienced incoordinately incoordination incrementalism indecipherable indecisiveness indecomposable indeliberation indemonstrable indestructible indeterminable indifferentism indiscerptible indiscerptibly indiscriminate indomitability indubitability inducibilities industrialised industrialized inelasticities inequigranular inevasibleness inextinguished infinitesimals inflammability infralapsarian infrastructure infratonsillar innominability inoepithelioma inoperableness inorganisation inquisitionist inscriptionist insecticidally insignificance insignificancy insuppressible insurabilities insurmountable intellectation intelligentsia intempestively intentionalism interactionist interarytenoid interassociate intercommunion interconnector interdependent interdetermine interdigitally interdigitates interferograms

interferometer interinsurance interinvolving interlocutress intermediators intermercurial intermigration intermolecular interopercular interoscillate interparochial interpellation interpenetrate interpermeates interpetiolary interplacental interplanetary interpretating interpretation interpretorial intersqueezing intertextually intervalometer interweavement interweavingly intraabdominal intrabronchial intracanonical intracutaneous intramercurial intramolecular intranquillity intranscalency intransigeance intransitivity introspectible investigatable inviolableness iridoparalysis irreconcilable irreproachable irritabilities isoalloxazines isocorybulbine isomerizations isotrimorphism italicizations

15 letter words beginning with i:

identicalnesses immaterialities immitigableness immunochemistry immunoreactions impassabilities impecuniousness impenetrability imperialization implementations importabilities impregnableness imprescriptible improcurability improvisatorize inapperceptible inapprehensible inapprehensibly incommensurable incompetentness incomprehension incomprehensive inconsequential incopresentable incorrectnesses incorrigibility incredulousness incudostapedial incuriousnesses indemnification indetermination indifferentists individualities indubitableness inequilaterally inescapableness inestimableness inextricability infeasibilities infralapsarians infrascapularis infrastructures infundibuliform inharmonicities inheritableness injuriousnesses inodorousnesses inorganizations inscriptionless insensatenesses inspirationists

instantaneously instrumentalism instrumentalist instrumentality instrumentation insurrectionary insurrectionise intellectualism intellectualist intellectuality intellectualize intelligentiary intelligentsias intelligibility intensification interchangeable intercollegiate intercommonable interdivisional interhybridized interlaminating interlamination internunciatory interregimental interresistance interresponsive interscholastic interstimulated interstratified interventionist intoxicatedness intransigentism intransigentist introspectional introvertedness intussusception inviolatenesses irreverentially irreversibility isorhythmically

16 letter words beginning with i:

immoderatenesses immunogeneticist impeachabilities imperceptibility imponderableness inadequatenesses inalienabilities inauspiciousness incompatibleness incomprehensible incomprehensibly incontrovertible inconvincibility incorporatedness incorrigibleness incrediblenesses indecisivenesses indescribability indiscrimination indisputableness indivisibilities indomitabilities inextinguishable infeasiblenesses influenceability ingloriousnesses inguinocutaneous iniquitousnesses insalubriousness insensiblenesses institutionalise institutionalism institutionalize intercanalicular intercommunicate intercontinental intercorpuscular intercrystallize interdiffusiness interlocutresses intermissionless intermodulations intermolecularly intermuscularity internationalism internationalist internationalize interpervasively interstimulation intertransversal interventionists

intervisitations intervocalically intolerabilities intransigentists intraterritorial invertebrateness irreconciliation irredressibility irrefragableness irreversibleness isoagglutination isocinchomeronic isokeraunophonic

17 letter words beginning with i:

immunodepressions immunopathologist imperialistically impressionability improvisationally inagglutinability incapaciousnesses incompatibilities incompletableness incongealableness inconvertibleness indefensibilities indistinctiveness indistinguishable individualization indubitablenesses inexpensivenesses inextricabilities inquisitivenesses inseparablenesses insolubilizations intellectualizers intemperatenesses intercolumniation intercommunicated interdepartmental interdisciplinary intergenerational internationalises interpopulational interproglottidal interrelationship intersubjectivity intertranslatable intradepartmental introspectionisms irreductibilities irremovablenesses irrepealabilities

18 letter words beginning with i:

immunosuppressions imperceptibilities imperturbabilities impracticabilities incompatiblenesses inconsequentiality indestructibleness indiscernibilities industrializations inexplicablenesses infradiaphragmatic interagglutination intercolumniations intercommunication intercomplimentary intercontradiction intercontradictory interincorporation irredeemablenesses irrefrangibilities irremissiblenesses irresponsibilities

19 letter words beginning with i:

ichthyopaleontology immunohematologists immunoprecipitation imperturbablenesses impracticablenesses inconspicuousnesses indemonstrabilities individualistically instantaneousnesses intellectualization interdenominational interesterification interferometrically interscholastically

20 letter words beginning with i:

inapprehensivenesses indeterminablenesses indigotindisulphonic intercommunicational interstratifications

22 letter words beginning with i:

incontrovertiblenesses

Summary / wrap-up / next steps:

Glad you visited this page with I words that begin with the letter i. Hopefully it helped you find the right 2 letter, 3 letter, 4 letter and longer word beginning with I. The post is organized by word length, and the longest I word on this post is 22 letters, and there are quite a few 18, 19, and 20 letter long examples too.