lunacy

lunacy

noun

Definition of LUNACY

1

a foolish act or idea <you want to sneak into the building after the alarm is set—what lunacy!>

Synonyms absurdity, asininity, bêtise, fatuity, foolery, foppery, idiocy, imbecility, inanity, insanity, lunacy, stupidity

Related Words absurdness, craziness, foolishness, inaneness, madness, senselessness, witlessness; buffoonery, monkeyshine(s), shenanigan(s), tomfoolery; drivel, humbug, nonsense, twaddle; blunder, bungle, flub, goof, howler

Near Antonyms discretion, forethought, prudence, sagacity, wisdom; brainstorm, inspiration

2

a serious mental disorder that prevents one from living a safe and normal life <the judge ruled that the certified lunacy of the accused made him incompetent to stand trial>

Synonyms aberration, dementia, derangement, lunacy, madness, mania, rage [archaic]

Related Words neurosis, psychosis; instability, irrationality, unreasonableness; delirium, frenzy, hysteria; hallucinosis, hypomania, paranoia, schizophrenia; senile dementia; delusion, hallucination; monomania, obsession, phobia; abnormality, dementedness, unsoundness

Near Antonyms lucidity, rationality, rationalness, reasonability, reasonableness; normality, soundness

Antonyms mind, saneness, sanity

3

lack of good sense or judgment <our friend's good-natured lunacy makes him of no use in an emergency but very entertaining companion nevertheless>

Synonyms absurdity, asininity, balminess, brainlessness, craziness, daftness, dippiness, dottiness, fatuity, fatuousness, folly, imbecility, inanity, insanity, lunacy, madness, nonsensicalness, nuttiness, preposterousness, senselessness, silliness, simplicity, unwisdom, wackiness, witlessness, zaniness

Related Words denseness, dim-wittedness, doltishness, dopiness, dullness (also dulness), dumbness, feeblemindedness, gormlessness [chiefly British], idiocy, mindlessness, oafishness, obtuseness, simplemindedness, simpleness, slowness, stupidity, stupidness, vacuity; fallacy, irrationality, unreasonableness; kookiness, weirdness; laughableness, ludicrousness, ridiculousness

Near Antonyms logicality, logicalness, rationality, rationalness, reasonability, reasonableness, validity; discernment, insight, perception, percipience

Antonyms prudence, sagaciousness, sagacity, sageness, sanity, sapience, sensibleness, soundness, wisdom