1. (n.) Intermittent mental unsoundness; insanity which is broken by intervals of reason, -- formerly supposed to be influenced by the changes of the moon; any form of unsoundness of mind, except idiocy; mental derangement or alienation.
2. (n.) A morbid suspension of good sense or judgment, as through fanaticism.
Thesaurus Entries
aberration, abnormality, absurdity, alienation, asininity, battiness, brain damage, brainlessness, brainsickness, buffoonery, clouded mind, clownishness, crackpottedness, crankiness, craziness, daffiness, daftness, dementedness, dementia, derangement, desipience, disorientation, distraction, eccentricity, fatuity, fatuousness, folie, folly, foolery, foolhardiness, foolheadedness, foolishness, frivolity, frivolousness, furor, giddiness, goofiness, idiocy, illogic, illogicality, imbecility, inanity, ineptitude, insaneness, insanity, irrationality, loss of mind, loss of reason, madness, mania, mental deficiency, mental derangement, mental disease, mental disorder, mental disturbance, mental illness, mental instability, mental sickness, mind overthrown, mindlessness, mindsickness, niaiserie, nugacity, nuttiness, oddness, pixilation, possession, preposterousness, psychopathy, psychosis, queerness, rabidness, reasonlessness, ridiculousness, sappiness, screwiness, senselessness, shattered mind, sick mind, sickness, silliness, strangeness, stupidity, thoughtlessness, triflingness, triviality, unbalance, unbalanced mind, unsaneness, unsound mind, unsoundness, unsoundness of mind, wackiness, weirdness, witlessness, zaniness, zanyism
