List of Synonyms and Antonyms of “I” Words

WordsSynonymsAntonyms
Idealexemplary, model, standard, perfect, supreme, hypotheticalflawed, imperfect, problematic
Identicalsame, similar, equal, equivalent, tantamount, evendistinct, diverse, dissimilar
Ignitekindle, fire, light, inflame, alight, burn, incenseextinguish, pacify, quench
Ignorantilliterate, uneducated, unaware, oblivious, unacquainted, benightedaware, knowledgeable, literate
Illegitimateillegal, illicit, outlawed, bastard, spurious, misbegottenauthorized, ethical, moral
Illicitlawless, unlawful, wrongful, felonious, clandestine, adulterouslegitimate, noble, proper
Immenseenormous, monumental, vast, titanic, colossal, elephantinetiny, minute, paltry
Impartialdispassionate, equitable, indifferent, unbiased, nonpartisan, justprejudiced, partial, discriminating
Impromptuextemporary, improvised, offhand, unrehearsed, ad-lib, unprepareddeliberate, planned, premeditated
Inclusivecomprehensive, expansive, extensive, sweeping, widespread, extendedexclusive, narrow, selective
Incrementadvance, boost, hike, increase, jump, raisedecrease, loss, slump
Indifferentdispassionate, objective, just, apathetic, nonpartisan, squareconcerned, caring, sympathetic
Industriousassiduous, objective, just, apathetic, nonpartisan, squareconcerned, caring, sympathetic
Inevitablecertain, inescapable, unavoidable, definite, sure, doomeduncertain, unlikely, unsure
Infiniteboundless, eternal, endless, unlimited, countless, innumerabledefinite, limited, measurable
Initialinceptive, beginning, introductory, primary, primordialclosing, final, last
Innovativeingenious, inventive, original, improvised, unprecedented, novelcustomary, habitual, traditional
Inquisitivecurious, nosy, snoopy, inquiring, questioning, investigatedisinterested, indifferent, incurious
Insanecrazy, daft, unsound, maniac, lunatic, dottysane, rational, logical
Insignificanttrivial, inconsequent, inconsiderable, meager, immaterial, negligiblesignificant, substantial, valuable
Intensifyaggravate, deepen, enhance, heighten, redouble, increaseweaken, soothe, lower
Interveneinterfere, intrude, meddle, obtrude, intercede, interposeignore, withdraw, avoid
Intimateclose, familiar, friendly, interior, confidential, personalformal, incompatible, cool
Invertreverse, transpose, turn, flip, upturn, backtrackadvance, forward, hold
Invincibleimpregnable, indomitable, unconquerable, unbeatable, unyielding, insurmountablebeatable, conquerable, breakable
Irritateaggravate, bug, exasperate, fret, peeve, nettleassuage, please, aid
Isolateseclude, segregate, insulate, separate, detach, removeintegrate, incorporate, mingle
Itinerantnomadic, vagabond, vagrant, migratory, migrant, wandererpermanent, settled, resident