Synonyms Starting with I
Inquisition Synonyms: investigation.Inquisitive Synonyms: curious, inquiring, prying, searching, quizzical, overcurious, nosy, snoopy.Inroad Synonyms: encroachment, incursion, invasion, assault, onslaught, infringement, attack, infiltration, trespass, injury, damage, impairment, dent, impression.Insane Synonyms: foolish, impractical, extravagant, scatterbrained, fanatic, senseless, fatuous, imbecilic, idiotic, moronic, simpleminded, bizarre, absurd, queer, odd, frenzied, frenetic, lunatic, unsound, loco.deranInsanitary Synonyms: unsanitary.Insanity Synonyms: folly, foolishness, extravagance, giddiness, fanaticism, senselessness, fatuity, imbecility, idiocy, absurdity, eccentricity, madness, frenzy, lunacy, lightheadedness.derangement, dementia, psychosis,Insatiable Synonyms: ravenous, insatiate, unappeasable, voracious, unquenchable, bottomless, gluttonous, quenchless, unlimited, endless, infinite.Inscribe Synonyms: write, engrave, etch, impress, imprint, incise, carve, chisel, letter, mark, pen.Inscription Synonyms: engraving, impression, imprint, incision, carving, lettering, mark, marking, hallmark, dedication, motto, legend.Inscrutable Synonyms: mysterious, enigmatic, impenetrable, incomprehensible, inexplicable, unfathomable, unknowable, baffling, hidden, occult, shrouded, esoteric, sphinxlike.Insecure Synonyms: unsafe, unstable, rickety, uncertain, perilous, dangerous, hazardous, risky, precarious, weak, shaky, wobbly, unsteady, tottering.dubious, undecided, puzzled, adrift, threatened, vulnerable, exposed, Insecurity Synonyms: uncertainty, doubt, doubtfulness, instability, fallibility, unreliability, danger, risk, jeopardy, precariousness, vulnerability, hesitation, dubiety.Insensible Synonyms: unconscious.Insensitive Synonyms: unfeeling, insensible, impassive, indifferent, obtuse, blunted, dull, callous, crass, tactless, unresponsive, thick skinned, numb, numbed, phlegmatic, apathetic, bovine.Insert Synonyms: interpose, introduce, interpolate, inject, interject, imbed, intercalate, inset, impregnate, imbue, intromit, interlard, intersperse, pierce, implant, put in.Insertion Synonyms: inset, interpolation, infix, addition, supplement.Insider Synonyms: member, colleague, fellow, associate, cardholder, confederate, collaborator, teammate, comrade.Insidious Synonyms: treacherous, duplicitous, conniving, sly, crafty, wily, cunning, tricky, deceptive, underhand, underhanded, Machiavellian, stealthy.Insight Synonyms: perception, understanding, penetration, discernment, intuition, intuitiveness, perspicacity, epiphany, perspicuity, sagacity, grasp, apergu, awareness.Insignia Synonyms: badge, emblem, mark, sign, label, regalia, decoration.Insignificant Synonyms: meaningless, inconsequential, inessential, unimportant, petty, paltry, trifling, trivial, marginal, picayune, immaterial, incidental, slight, measly, worthless, piddling.Insincere Synonyms: hypocritical, false, dishonest, deceitful, disingenuous, dissembling, fraudulent, untruthful, perfidious, hollow, mealy-mouthed, twofaced, double-dealing.Insincerity Synonyms: hypocrisy.Insinuate Synonyms: hint, suggest, imply, intimate, indicate, whisper, convey, mean, signify, asperse.Insinuation Synonyms: innuendo, implication, suggestion, allusion, intimation, aspersion, imputation, hint, slur.