Synonyms and Antonyms of preposterous
1 conceived or made without regard for reason or reality the idea that extraterrestrials built the pyramids is preposterous Synonyms of preposterous absurd, bizarre, crazy, fanciful, foolish, insane, nonsensical, fantastic, unreal, wildWords Related to preposterous implausible, inconceivable, incredible, unbelievable, unimaginable, unthinkable; extravagant, grotesque; bizarro, curious, eccentric, far-out, funny, kinky, kooky (also kookie), odd, outlandish, out-of-the-way, outré, peculiar, quaint, queer, queerish, quirky, screwy, strange, wacky (also whacky), way-out, weird; farcical, laughable, ludicrous, ridiculous; Alice-in-Wonderland, Kafkaesque, nightmarish; dreamlike, surrealAntonyms of preposterous realistic, reasonable
2 showing or marked by a lack of good sense or judgment a preposterous suggestion to go swimming in this freezing weather Synonyms of preposterous absurd, asinine, balmy, brainless, bubbleheaded, cockeyed, crackpot, crazy, cuckoo, daffy, daft, dippy, dotty, fatuous, featherheaded, fool, half-baked, harebrained, half-witted, inept, insane, jerky, kooky (also kookie), loony (also looney), lunatic, lunkheaded, mad, nonsensical, nutty, foolish, sappy, screwball, senseless, silly, simpleminded, stupid, tomfool, unwise, wacky (also whacky), weak-minded, witless, zanyWords Related to preposterous airheaded, birdbrained, boobish, brain-dead, chowderheaded, chuckleheaded, clueless, dense, dim, dim-witted, doltish, dopey (also dopy), dorky [slang], dull, dumb, dunderheaded, empty-headed, fatuous, feebleminded, gormless [chiefly British], idiotic (also idiotical), imbecile (or imbecilic), knuckleheaded, lamebrain (or lamebrained), mindless, moronic, oafish, obtuse, opaque, pinheaded, simple, slow, slow-witted, soft, softheaded, thoughtless, thick, thickheaded, unintelligent, vacuous, witless; fallacious, illogical, invalid, irrational, nonrational, surd, unreasonable, unreasoning, unsound, weak; farcical, laughable, ludicrous, ridiculous; notional; buffoonish, clownish; ill-advised, unconsidered, unreasonedNear Antonyms of preposterous brainy, bright, clever, intelligent, smart; logical, rational, reasonable, valid; well-advisedAntonyms of preposterous judicious, prudent, sagacious, sage, sane, sapient, sensible, sound, wise
3 so foolish or pointless as to be worthy of scornful laughter the movie thriller had such a preposterous plot that we were on the edge of our seats snickering Synonyms of preposterous absurd, cockamamy (or cockamamie), comical, derisive, derisory, farcical, laughable, ludicrous, pathetic, ridiculous, risible, sillyWords Related to preposterous asinine, brainless, dumb, fatuous, foolish, half-baked, half-witted, harebrained, idiotic (also idiotical), imbecile (or imbecilic), inane, jerky, moronic, nonsensical, simpleminded, stupid, unwise, weak-minded, witless; balmy, cockeyed, crazy, cuckoo, daffy, daft, dotty, insane, kooky (also kookie), loony (also looney), lunatic, mad, nutty, screwball, senseless, wacky (also whacky); fantastic (also fantastical), far-fetched, inconceivable, incredible, unbelievable, unreal, unrealistic, unreasonable; illogical, irrationalNear Antonyms of preposterous earnest, serious, solemn; believable, conceivable, credible, logical, rational, realistic, reasonable, sensible
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