Thesaurus
insane
Synonyms and Antonyms of insane
- Only an insane person would intentionally jump off a skyscraper.
balmy, bats, batty, bedlam, bonkers, brainsick, certifiable, crackbrained, cracked, crackpot, crazed, crazy, cuckoo, daffy, daft, demented, deranged, gaga, kooky (also kookie), loco [slang], loony (also looney), lunatic, mad, maniacal (also maniac), mental, non compos mentis, nuts, nutty, psychotic, screwy, unbalanced, unhinged, unsound, wacky (also whacky)
dotty, fey, loopy, off, teched (or tetched), touched
aberrant, delirious, delusional, delusionary, disordered, disturbed, neurotic, paranoiac (also paranoic), paranoid (also paranoidal), sociopathic
eccentric, odd, oddball, strange
amok (or amuck), ape, ballistic, bananas, berserk, nuclear
distracted, distraught, frantic, frenzied, haywire, hysterical (also hysteric), raving
around the bend, off one's gourd, off one's head, off one's rocker, out of one's head (or mind)
- a completely insane plan to build a ball field in the middle of nowhere
absurd, bizarre, crazy, fanciful, fantastic (also fantastical), foolish, nonsensical, preposterous, unreal, wild
implausible, inconceivable, incredible, unbelievable, unimaginable, unthinkable
curious, eccentric, far-out, funny, kinky, kooky (also kookie), odd, outlandish, out-of-the-way, peculiar, quaint, quirky, screwy, strange, wacky (also whacky), way-out, weird
off the wall [slang]
- an insane idea to blow all of their savings on lottery tickets
absurd, asinine, balmy, brainless, cockeyed, crackpot, crazy, cuckoo, daffy, daft, dippy, dotty, fatuous, featherheaded, fool, foolish, half-baked, half-witted, harebrained, inept, jerky, kooky (also kookie), loony (also looney), lunatic, lunkheaded, mad, nonsensical, nutty, preposterous, sappy, screwball, senseless, silly, simpleminded, stupid, tomfool, unwise, wacky (also whacky), weak-minded, witless, zany
airheaded, birdbrained, brain-dead, chowderheaded, chuckleheaded, clueless, dense, dim, dim-witted, doltish, dopey (also dopy), dorky [slang], dull, dumb, dunderheaded, empty-headed, fatuous, feebleminded, 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, unreasonable, unreasoning, unsound, weak
out to lunch
- wanted an insane amount of money to paint our house
a bit much, over the top
Learn More about insane
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Dictionary: Definition of insane Medical Dictionary: Definition of insane Spanish Central: Translation of insane Nglish: Translation of insane for Spanish speakers Britannica English: Translation of insane for Arabic speakers
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