stupidity

1 the quality or state of lacking intelligence or quickness of mind the stupidity of the dialogue between the two romantic leads had movie audiences giggling uncontrollably Synonyms boneheadedness, brainlessness, denseness, density, dim-wittedness, doltishness, dopiness, dorkiness, dullness (also dulness), dumbness, fatuity, foolishness, gormlessness [chiefly British], mindlessness, oafishness, obtuseness, senselessness, simpleness, slowness, stupidness, thickness, vacuity, weak-mindedness, witlessness Related Words feeblemindedness, simplemindedness; absurdity, asininity, balminess, craziness, daftness, dippiness, dottiness, fatuousness, folly, idiocy, inaneness, inanity, insanity, lunacy, madness, nincompoopery, nonsensicalness, nuttiness, preposterousness, silliness, simplicity, wackiness, zaniness; fallacy, irrationality, unreasonableness; mental deficiency, mental retardation Near Antonyms acumen, alertness, astuteness, discernment, insight, judgment (or judgement), perception, percipience, perspicacity; sagacity, sageness, sapience, wisdom, wit; logicality, logicalness, rationality, rationalness, reasonableness, soundness, validity Antonyms braininess, brightness, brilliance, cleverness, intelligence, keenness, quickness, quick-wittedness, sharpness, smartness

2 a foolish act or idea the succession of stupidities by the company's owners was bound to result in bankruptcy Synonyms absurdity, asininity, bêtise, fatuity, foolery, foppery, idiocy, imbecility, inanity, insanity, lunacy, follyRelated Words absurdness, craziness, foolishness, inaneness, madness, senselessness, witlessness; buffoonery, monkeyshine(s), shenanigan(s), tomfoolery; drivel, humbug, nonsense, twaddle; blunder, bungle, flub, goof, howlerNear Antonyms discretion, forethought, prudence, sagacity, wisdom; brainstorm, inspiration

3 language, behavior, or ideas that are absurd and contrary to good sense leaving her bags unguarded inside the airport terminal was nothing but stupidity on her part Synonyms applesauce [slang], balderdash, baloney (also boloney), beans, bilge, blah (also blah-blah), blarney, blather, blatherskite, blither, bosh, bull [slang], bunk, bunkum (or buncombe), claptrap, codswallop [British], crapola [slang], crock, drivel, drool, fiddle, fiddle-faddle, fiddlesticks, flannel [British], flapdoodle, folderol (also falderal), folly, foolishness, fudge, garbage, guff, hogwash, hokeypokey, hokum, hoodoo, hooey, horsefeathers [slang], humbug, humbuggery, jazz, malarkey (also malarky), moonshine, muck, nerts [slang], nuts, piffle, poppycock, punk, rot, rubbish, senselessness, silliness, slush, nonsense, taradiddle (or tarradiddle), tommyrot, tosh, trash, trumpery, twaddleRelated Words absurdity, asininity, fatuity, foolery, idiocy, imbecility, inaneness, inanity, insanity, kookiness, lunacy; absurdness, craziness, madness, senselessness, witlessness; hoity-toity, monkey business, monkeyshine(s), shenanigan(s), tomfoolery; gas, hot air, rigmarole (also rigamarole); double-talk, greek, hocus-pocusNear Antonyms levelheadedness, rationality, reasonability, reasonableness, sensibleness; common sense, horse sense, sense; discernment, judgment (or judgement), wisdom