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lunatic

   Also found in: Legal, Encyclopedia, Wikipedia 0.03 sec.
lu·na·tic  (ln-tk)
adj.
1. Suffering from lunacy; insane.
2. Of or for the insane.
3. Wildly or giddily foolish: a lunatic decision.
4. Characterized by lunacy or eccentricity.

[Middle English lunatik, from Old French lunatique, from Latin lnticus, from lna, moon; see leuk- in Indo-European roots.]

luna·tic n.

lunatic
Adjective
1. foolish; eccentric
2. Archaic insane
Noun
1. a foolish or annoying person
2. Archaic a person who is insane [Latin luna moon]
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.lunaticlunatic - an insane person
crazy, looney, loony, nutcase, weirdo - someone deranged and possibly dangerous
bedlamite - an archaic term for a lunatic
pyromaniac - a person with a mania for setting things on fire
madwoman - a woman lunatic
diseased person, sick person, sufferer - a person suffering from an illness
2.lunaticlunatic - a reckless impetuous irresponsible person
adventurer, venturer - a person who enjoys taking risks
tearaway - a reckless and impetuous person
Adj.1.lunatic - insane and believed to be affected by the phases of the moon
colloquialism - a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech
insane - afflicted with or characteristic of mental derangement; "was declared insane"; "insane laughter"

lunatic
noun 1. madman, maniac, psychopath, nut (slang) loony (slang) nutter Brit. (slang) nutcase (slang) headcase (informal) headbanger (informal)
adjective 2. mad, crazy, insane, irrational, nuts (slang) barking (slang) daft, demented, barmy (slang) deranged, bonkers (slang), chiefly Brit. unhinged, loopy (informal) crackpot (informal) out to lunch (informal) barking mad (slang) maniacal, gonzo (slang) up the pole (informal) crackbrained, wacko or whacko (informal) off the air Austral. (slang) see see, mad
Translations
Spanish lunatic [ˈluːnətɪk] adj, nloco/a m/f
French lunatic [ˈluːnətɪk] nfou(folle)dément(e)
adjfou(folle)dément(e)

German lunatic [ˈluːnətɪk] adjwahnsinnig
nWahnsinnige(r) f(m), Irre(r) f(m)

Italian lunatic [ˈluːnətɪk] adj, npazzo/a, matto/a

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? Mentioned in ? References in classic literature
 
No wonder that fellow thought me an escaped lunatic.
and the solution of it has been repeatedly attempted, with no other result than to crowd our lunatic asylums with the would-be solvers.
Saloon-mates I drank with, who were good fellows and harmless, sober, did most violent and lunatic things when they were drunk.
 
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