Synonyms: words starting with I
516 words starting with I that have a synonyms page, each shown with its closest synonyms.
- ice chestcooler, cool box, ice box
- ice-coldfreezing, clay-cold, boreal
- iceboxcooler, cool box, coolbox
- ichthyicfishy, piscine, fishlike
- ichthyologyichth., ichthol.
- ickygross, ishy, schmaltzy
- iconidol, symbol, epitome
- iconicsignature, emblematic, famous
- iconoclastrebel, heretic, nonconformist
- icycold, glacial, severe
- idealconceptual, notional, optimal
- identicalsame, selfsame
- identicalnessidentity, identicality
- identifyID, clock, ken
- identikitphotofit, police sketch, composite sketch
- identitysameness, individuality, selfhood
- idiocyidiotism, idioticness, imbecility
- idiomexpression, dialect, vernacular
- idiosyncrasyquirk, foible, idiocrasy
- idiotimbecile, moron, retard
- idlepassive, unemployed, inert
- idlerdo-nothing, slacker, truant
- idolicon, star, superstar
- idolizerespect, honor, value
- iffyquestionable, dodgy, dubious
- ignitableflammable, inflammable[contranym]]ic senses>, combustible
- ignitefire, light, kindle
- ignoblemean, vulgar, base
- ignominiouspathetic, despicable, base
- ignorabletrivial, negligible
- ignoramusknow-nothing, dunce
- ignorancecluelessness, unknowingness, unawareness
- ignorantill-informed, uninformed, unwitting
- ignoredisregard, despise, neglect
- ilkkind, type, sort
- illunhealthy, sickly, infirm
- ill humorcrankiness, bad mood, mood
- ill-beingdepression, misery, sorrow
- ill-bodingstar-crossed, ill-starred, dire
- ill-fatedstar-crossed, condemned, damned
- ill-omenedstar-crossed, ill-starred, dire
- ill-starredstar-crossed, dire, sinister
- ill-timedmistimed, inopportune
- illationchoice, opinion, award
- illegalcriminal, unlawful, illicit
- illegibleunreadable, undecipherable, dirty
- illegitimatecriminal, illegal, unlawful
- illiberalprotectionist, bigoted
- illicitillegal, banned, prohibited
- illimitableunlimited, limitless
- illiterateanalphabetic, ignorant, unlettered
- illudedeceive, delude, dupe
- illuminatelight, lighten, enlighten
- illusionmisapprehension, misconception, mirage
- illusionismconjuring, conjuration, magic
- illustrateilluminate, belight, beshine
- illustriousoutstanding, remarkable, well-regarded
- imaginationfancy, creativity, inventiveness
- imagine thathello, blimey, Christ
- imbuepervade, endue, infuse
- imitatemimic, mirror, copy
- imitativederivative, copycat
- immaculatelily-white, pristine, unsullied
- immaneample, big, exceeding
- immaterialtenuous, insubstantial, ethereal
- immaturechildish, juvenile, puerile
- immediatepresent, instant, close
- immediatelyinstantly, forthwith, instanter
- imminentforthcoming, impending, pending
- immobilestuck, fixed, stationary
- immobilizefreeze, stop
- immoralwrong, unscrupulous, unethical
- immoralitywickedness, impropriety, indecency
- immoralizecorrupt, seduce, warp
- immorallywrongly, improperly, wrongfully
- immortalwizard, immort, deathless
- immortalityundeadliness, athanasy, deathlessness
- immotilestuck, fixed, lifeless
- immovablestuck, fixed, lifeless
- immuneimpervious, -proof, exempt
- immureimprison, cloister, confine
- immutablefixed, unchangeable
- impbrat, little dickens, scamp
- impactfuleventful, effectual, significant
- impalestick, transfix, fix
- impartcontribute, declare, inform
- impartialfair-minded, objective, neutral
- impassibleclinical, dispassionate, unemotional
- impassionateimpassioned, dispassionate
- impassivestill, stock-still, clinical
- impelencourage, push, urge
- impendingforthcoming, imminent, pending
- impenetrableimpregnable, impermeable, unfathomable
- imperceptibleinsensible, undistinguishable, imperceivable
- imperfectfaultful, defective, fallible
- imperfectionflaw, problem, mark
- imperiousauthoritarian, overbearing, domineering
- impermanencetransience, ephemerality, temporariness
- impersonatorimitator, impostor, impressionist
- imperturbablestill, pacific, laid-back
- impetuousrash, impulsive, hotheaded
- impingecollide, crash, strike
- impiousprofane, ungodly, impure
- impishmischievous, puckish, prankish
- implacableunassuageable, unpleasable, unyielding
- implantinstill, graft, insert
- implementrealize, execute, actualize
- implicateensnarl, involve, ravel
- implicitunspoken, implied, inherent
- implyentail, suggest, hint
- impolitebad-mannered, ill-mannered, rough
- importmeaning, purport
- importantkey, historic, crucial
- imposeinflict, force
- impositioninfliction, cheating, deception
- impossibilityinability, incapability, helplessness
- impossibleunfeasible, nonpossible, unhappenable
- impotentweak, feeble, puny
- impoverishruin, beggar, destitute
- impoverishedpoor, bankrupt, poverty-stricken
- impregnableunassailable, inexpugnable
- impregnatecover, inseminate
- impressgrab, make an impression, cut a figure
- imprimeryprinter, printing house, &c
- imprisonjail, incarcerate, gaol
- improbationblame, condemning, disapproval
- improbitywickedness, immorality, impropriety
- impromptuspur-of-the-moment, off-the-cuff, improvised
- improprietywickedness, immorality, indecency
- improvebetter, amend, ameliorate
- improvidentwasteful, myopic, short
- improvisatoryimprovisational, improvisatorial, impromptu
- improvisepunt, fly by the seat of one's pants, play by ear
- imprudentrash, unwise, injudicious
- impudencegall, bronze, temerity
- impudentfamiliar, brazen-faced, irreverent
- impugndisavow, call into question, challenge
- impurecontaminated, tainted, polluted
- impuritypollution, corruption, contamination
- imputeattribute, ascribe, accredit
- in a flashlightning-quick, fulgurant, fast as lightning
- in a wayafter a fashion, in a sense, in a manner of speaking
- in a wordbriefly, concisely
- in additionfurthermore, additionally, further
- in addition towith, besides, on
- in any caseregardless, whatever the case may be, anyhow
- in any eventnevertheless, nonetheless
- in due courseall in good time, in due time, in good time
- in due timeall in good time, in good time, in due course
- in effectstanding, effectively, at bottom
- in essenceessentially, fundamentally
- in flagrante delictored-handed, in the act, with one's dick in one's hand
- in front ofbefore, around
- in generalusually, as a whole, generally
- in handhandy, at hand, on hand
- in itselfinherently, by itself, per se
- in no waynoway, on no account, under no circumstances
- in parallelsimultaneously, synchronously
- in realityreally, for real life, in practice
- in regard tore, apropos, regarding
- in reservereserved, reserve, reservedly
- in respect ofas regards, by dint of, in terms of
- in short supplyinfrequent, deficient, poor
- in spite ofdespite, notwithstanding, with
- in tearscrying, sobbing, tearful
- in thatas, because, since
- in the bagassured, cinched, guaranteed
- in the endultimately, at last, all things considered
- in the rawin the rough, in the altogether, in the buff
- in the windimminent, afoot, in the works
- in timeearly, on time, promptly
- in two shakesin a brace of shakes, in a couple of shakes, in a few shakes
- inaccuracymistake, imprecision, incorrectness
- inactivepassive, silent, dormant
- inadequacydeficiency, insufficiency
- inadequatelean, poor, unsatisfactory
- inadvertentdesignless, unintended
- inadvisabilityrashness, foolhardiness, impropriety
- inanimatestill, stock-still, stuck
- inapparentunseen, inconspicuous, sightless
- inappropriateimproper, unfit, unsuitable
- inasmuch asas, forthy, for
- inattentiveabsent-minded, distracted, distrait
- inaudiblevoiceless, quiet
- inauguratehandsel, inaugur, auspicate
- inauspiciousstar-crossed, ill-starred, dire
- incalculableincomputable, unimaginable
- incantationspell, enchanting, charm
- incelAFC, incelibacy, love-shyness
- incenseprovoke, outrage, infuriate
- incessantlycontinuously, endlessly, nonstop
- inchoatenascent, incipient, chaotic
- incidentepisode, happening, affair
- incidentalcontingent, accidental, serendipitous
- incidentallycoincidentally, happenstantially, circumstantially
- incineratecinder, cremate, burn
- incipientbeginning, commencing, emerging
- incisivebiting, decisive, forthright
- inciteencourage, push, motive
- incivildiscourteous, uncivil, uncouth
- inclementfoul, pitiless, remorseless
- inclinationpropensity, inclining, proclivity
- inclinedready, apt, disposed
- includecontain, incorporate, comprise
- incoherentdisconnected, unintelligible
- incommodehurt, frustrate, discommode
- incompetentnegative, fourth-rate, fifth-rate
- incompletelypartly, partially
- incompletionincompleteness, noncompleteness, noncompletion
- incomprehensiblemysterious, inexplicable, obscure
- incongruityincongruence, incongruency, dissimilarity
- inconsequentialslight, worthless, insignificant
- inconsiderableslight, vain, null
- inconsideratethoughtless, unthoughtful
- inconsistencyincongruity, difference
- inconsolabledepressed, miserable, unhappy
- inconspicuouslow-profile, unseen, discreet
- incontinentlywrongly, improperly, wrongfully
- incontrovertibleincontestable, inarguable, apodictic
- inconveniencenuisance, trouble
- incorporateabsorb, swallow, assimilate
- incorrigibleuncorrectable, irreparable, determined
- increasegrow, enlarge, augment
- incredibleunbelievable, noncredible
- incriminateaccuse, indict, charge
- inculpabilitycleanness, blamelessness, guiltlessness
- inculpatefault, accuse, denounce
- indecencywickedness, immorality, impropriety
- indecentimmoral, improper, unseemly
- indeedactually or truly, yea, absolutely
- indefatigabletireless, untiring, unflagging
- indefensibleinsupportable, vulnerable, inexcusable
- indefiniteundefined, vague, unlimited
- indemnificationcompensation, atonement, indemnity
- indemnityinsurance, indemnification, amends
- independentself-standing, free, substantive
- indescribableineffable, untold, nameless
- indestructibleundestroyable, undestructable, unbreakable
- indexteacher, forefinger, arrow-finger
- index fingerteacher, index, arrow-finger
- Indian almondbroadleaf, talisay, almendro
- Indian hempjanapa, janapan
- Indian jujubeber, dunks
- Indian lilacbead-tree, pride of India, Cape lilac
- Indian peacockblue peacock, blue peafowl, Indian blue peacock
- Indian plumflacourtia, East Indian plum, Indian coffee plum
- Indian signcurse, hex, hoodoo
- indicateindex, betoken
- indicationtip-off, signal
- indicatordirectional, blinker, directional signal
- indictaccuse, incriminate, charge
- indifferenthappy-go-lucky, laid-back, meh
- indigenousnatural, aboriginal, local
- indigentpoor, bankrupt, poverty-stricken
- indistinctobscure, fuzzy, ambiguous
- individualpersonal, solitary, single
- individuallyabsolutely, apart, singly
- indolenceidleness, inexertion
- indomitablenever-say-die, unconquerable, unsubduable
- indubitablycertainly, undoubtedly, unquestionably
- induceencourage, push, stimulate
- indulgecocker, cosset, spoil
- indulgentsoft-handed, open-minded, liberal
- industrioushardworking, diligent, assiduous
- industrydiligence, industriousness, application
- inebriationdrunkenness, inebriacy, fuddling
- inedibleuneatable, unedible, inesculent
- ineffabilityineffableness, indescribability, inexpressibility
- ineffableunspeakable, nameless, unutterable
- ineffectiveincompetent, miserable, ineffectual
- ineffectualgood-for-nothing, vain, worthless
- ineleganceclumsiness, bluntness
- inelegantdémodé, haphazard
- ineluctablenatural, inescapable, inexorable
- inenarrableineffable, nameless, unutterable
- ineptnessincompetence, unsuitability
- inequalityunequalness, inequalness, difference
- inequitybias, injustice, unfairness
- ineradicableinveterate, firm
- inertstuck, fixed, passive
- inescapablenecessary, natural, inevitable
- inessentialextrinsic, unessential, unneeded
- inevidentlow-profile, obscure, discreet
- inevitabilitynecessity, certainty
- inevitablenecessary, natural, certain
- inevitablynecessarily, unavoidably, ineluctably
- inexactimprecise, imperfect, loose
- inexistencenonexistence, inherence, absence
- inexistentnonexistent, null, beingless
- inexorablenatural, inescapable, implacable
- inexpensivelow-end, low-cost, budget
- inexperiencednew, unseen, raw
- inexpertbungling, maladroit
- inexplicablemysterious, obscure, unknowable
- infalliblefaultless, perfect
- infamizewrong, dirty, foul
- infamousnotorious, ill-famed, nefarious
- infamywrong, notoriety, outrage
- infantilechildish, juvenile, immature
- infeasibilityunfeasibility, unrealizability
- infectious diseaseinfection, ID, infectious diseases
- inferdeduce, imply, conclude
- inferencechoice, opinion, award
- inferiorbad, one-star, low-quality
- infernalhellish, obscure, gloomy
- infidelunbeliever, atheist, nonbeliever
- infidelitybetrayal, Synonyms: adultery, irreligion
- infiltratorplant, informant, narc
- infiniteunlimited, universal, limitless
- infinitelynonstop, incessantly, ceaselessly
- infinityendlessness, limitlessness
- infirmcrank, disconfirm, ill
- inflamefire, light, ignite
- inflammableflammable, combustible, hot-headed
- inflammationignition, passion, animosity
- inflatedpompous, bombastic, turgid
- inflexiblestiff, rigid, unyielding
- influxinflood, introduction
- informadvise, tell, impart
- informalcolloquial, not formal, ceremonious
- informantconsultant, sneak, tattler
- information superhighwaycloud, digital highway, Infobahn
- infrequencyscarcity, rareness, seldomness
- infuriateanger, provoke, outrage
- ingenioussmart, keen, brilliant
- ingesttouch, consume, get outside
- inglebutter up, inveigle, sweet-talk
- ingloriouspathetic, despicable, base
- ingrainbreed in the bone, embed, infix
- inhabitlive, bedwell, stay
- inhabitedpopulated, peopled, tenanted
- inhaleinspire, breathe in, inbreathe
- inharmoniousdisharmonious, unharmonious
- inherentintegral, intrinsic, essential
- inhibitmar, prohibit, impede
- inhumanfell, cruel, brutal
- inhumationinterment, burial
- inhumeinter, bury, entomb
- inimitableuncopiable, incopiable, unimitable
- iniquitousabandoned, wicked, black-hearted
- iniquitywrong, corruption, sin
- initialversal, incipient, inceptive
- initiallyoriginally, at first, in the first place
- initiateinstitute, induct
- injurehurt, damage, harm
- injuriousharmful, hurtful, defamatory
- injurytrauma, wound, lesion
- injury timeadded time, additional time, stoppage time
- inkballyhoo, flak, hoopla
- inkyblack, inkish, inklike
- innalehouse, pot-house, hotel
- innatenatural, congenital, indigenous
- innocencecleanness, blamelessness, unguilt
- innocencyinnocence, innocuity, unguilt
- innocentpure, righteous, blameless
- innocuousharmless, anodyne, undamaging
- innominate boneinnominate, innominatum
- innovatepioneer, invent, boldly go where no man has gone before
- innovativemould-breaking, avant-garde, innovatory
- innumerableuncountable, unnumbered, numberless
- inobtrusivelow-profile, obscure, discreet
- inoculateimmunize, vaccinate
- inopportuneunfit, untimely, ill-timed
- inordinatesky-high, exorbitant, disproportionate
- inornatesimple, plain, severe
- inosculateblend, fuse, homogenize
- inoxidizableunoxidable, inoxidable, unoxidizable
- inquinatesoil, foul, spot
- inquirerinterrogator, questioner, querent
- inroadforay, inbreak, inbreaking
- insanecrazy, weird, mad
- insane asylumbin, booby-hatch, booby house
- insanitymadness, lunacy, insaneness
- inscrutablemysterious, inexplicable, obscure
- insecurityinsecureness, self-doubt
- insensateinsensitive, severe, cold-eyed
- insensibleinsensitive, mysterious, inexplicable
- insensitivesevere, cold-eyed, grim
- insertenter, inset
- insidioussubtle, perfidious, proditorious
- insignificantslight, vain, null
- insinuatesuggest, imply, allude
- insipidtasteless, bland, dull
- insolentarrogant, cocky, irreverent
- insolubleindissoluble, unsolvable, mysterious
- insoucianthappy-go-lucky, laid-back, devil-may-care
- inspirationeureka, inhalation, afflatus
- installmentepisode, part, investiture
- instantimmediate, eyeblink, flash
- instantaneousinstant, immediate
- instantialrandom, instated, realize
- instigateencourage, provoke, stimulate
- instigatormischief-maker, agitator, ruffian
- instillimplant, din, infix
- instructeducate, direct, guide
- instructioneducation, indoctrination, charge
- instrumentimplement, tool, utensil
- insubstantialimmaterial, ethereal, tenuous
- insufferableunendurable, unsupportable
- insultput-down, slur, offence
Source and license
Synonyms and antonyms adapted from the Wiktionary entry of each word. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws grouped them by meaning and gave each word its own synonyms page. Wiktionary data of 2026-09-02.
Cite this page: “Synonyms for Words Starting with I.” Word.ws, https://word.ws/synonyms/a-z/i. Based on Wiktionary, CC BY-SA 4.0.