loony

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also luny

adjective

1. So senseless as to be laughable: absurd, foolish, harebrained, idiotic, imbecilic, insane, lunatic, mad, moronic, nonsensical, preposterous, silly, softheaded, tomfool, unearthly, zany. Informal cockeyed, crazy, loopy. Slang balmy², dippy, dopey, jerky, sappy, wacky. See ability/inability, knowledge/ignorance.
2. Afflicted with or exhibiting irrationality and mental unsoundness: brainsick, crazy, daft, demented, disordered, distraught, dotty, insane, lunatic, mad, maniac, maniacal, mentally ill, moonstruck, off, touched, unbalanced, unsound, wrong. Informal bonkers, cracked, daffy, gaga. Slang bananas, batty, buggy, cuckoo, fruity, loco, nuts, nutty, screwy, wacky. Chiefly British crackers. Law non compos mentis. Idioms: around the bend, crazy as a loon, mad as a hatter, not all there, nutty as a fruitcake, offout ofone's head, off one's rocker, of unsound mind, out of one's mind, sick in the head, stark raving mad. See sane/insane.

noun

A person regarded as strange, eccentric, or crazy: crackpot, crazy, eccentric, lunatic. Informal crank, loon. Slang cuckoo, ding-a-ling, dingbat, kook, nut, screwball, weirdie, weirdo. See wise/foolish.

adjective
Also looney Also looney
adjective, politics

1: Mad, crazy. (1872 —) .
Wilcox & Rantzen She had lost her place in the television 'record book' of loony pets (1981).

2: Unacceptably radical or extreme. (1977 —) .
City Limits The press has branded Deirdre Wood a 'loony lefty' (1987). noun

3: A mad person. (1884 —) .
L. Cody The man was clearly a loony and she wondered how Mr Brierly would deal with him (1982).

[Shortened form of lunatic + -y.]

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For a list of words related to loony, see:

• Insanity - loony: Informal. (n) lunatic; (adj) crazy; insane

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See words rhyming with "loony."

Dansk (Danish)
n. - tosse, sindssyg
adj. - skør, tosset, forrykt

Nederlands (Dutch)
een gek, knettergek, grappig, dwaas

Français (French)
n. - farfelu, taré, dingue
adj. - farfelu

Deutsch (German)
n. - Verrückter
adj. - verrückt

Ελληνική (Greek)
n. - παλαβιάρης
adj. - μουρλός, αλλόκοτος, τρελός

Italiano (Italian)
pazzo

Português (Portuguese)
n., -
adj. - maluco (m) (gír.)

Русский (Russian)
псих, чокнутый

Español (Spanish)
n. - loco
adj. - loco, chiflado

Svenska (Swedish)
n. - galning, dåre, tokstolle
adj. - galen, idiotisk, hispig

中文（简体）(Chinese (Simplified))
疯子, 发疯的

中文（繁體）(Chinese (Traditional))
n. - 瘋子
adj. - 發瘋的

한국어 (Korean)
n. - 미치광이
adj. - 미친, 어리석은, 철 없는

日本語 (Japanese)
adj. - 気の狂った, ばかな, 狂気の
n. - 狂人, ばか

العربيه (Arabic)
‏(الاسم) الشخص المعتوه (صفه) معتوه‏

עברית (Hebrew)
n. - ‮מטורף, טיפש‬
adj. - ‮מטורף, טיפש‬

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