adj.

1. 1. Of, exhibiting, or afflicted with insanity.
   2. Characteristic of or associated with persons afflicted with insanity: an insane laugh; insane babbling.
   3. Intended for use by such persons: an insane asylum.
2. Immoderate; wild: insane jealousy.
3. Very foolish; absurd: took insane risks behind the wheel.

[Latin īnsānus : in-, not; see in–¹ + sānus, sane, healthy.]

insanely in·sane'ly adv.
insaneness in·sane'ness n.

adjective

1. Afflicted with or exhibiting irrationality and mental unsoundness: brainsick, crazy, daft, demented, disordered, distraught, dotty, lunatic, mad, maniac, maniacal, mentally ill, moonstruck, off, touched, unbalanced, unsound, wrong. Informal bonkers, cracked, daffy, gaga, loony. 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.
2. So senseless as to be laughable: absurd, foolish, harebrained, idiotic, imbecilic, lunatic, mad, moronic, nonsensical, preposterous, silly, softheaded, tomfool, unearthly, zany. Informal cockeyed, crazy, loony, loopy. Slang balmy², dippy, dopey, jerky, sappy, wacky. See ability/inability, knowledge/ignorance.

adj

Definition: mentally ill; foolish
Antonyms: balanced, healthy, rational, reasonable, sane, sensible, sound, well

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Dansk (Danish)
adj. - vanvittig, skør, tosset, sindssyg

idioms:

• insane asylum    sindssygeanstalt

Nederlands (Dutch)
geschift, krankzinnig, de gekken

Français (French)
adj. - (gén) fou, insensé, démentiel, (Jur) aliéné

idioms:

• insane asylum    asile de fous

Deutsch (German)
adj. - wahnsinnig, geisteskrank, irrsinnig

idioms:

• insane asylum    Irrenanstalt

Ελληνική (Greek)
adj. - παράφρων, φρενοβλαβής

idioms:

• insane asylum    άσυλο φρενοβλαβών

Italiano (Italian)
demente, pazzo

idioms:

• insane asylum    manicomio

Português (Portuguese)
adj. - doido, sem sentido, insano
n. pl. - os doentes (m pl) mentais

idioms:

• insane asylum    hospital (m) para doentes mentais

Русский (Russian)
душевнобольной

idioms:

• insane asylum    психиатрическая больница

Español (Spanish)
adj. - demente, insensato, loco

idioms:

• insane asylum    manicomio, nosocomio, sanatorio

Svenska (Swedish)
adj. - sinnesjuk, vansinnig, galen

中文（简体） (Chinese (Simplified))
患精神病的, 极愚蠢的

idioms:

• insane asylum    精神病院

中文（繁體） (Chinese (Traditional))
adj. - 患精神病的, 極愚蠢的

idioms:

• insane asylum    精神病院

한국어 (Korean)
adj. - 미친, 광기의

日本語 (Japanese)
adj. - 正気でない, 気違いじみた, 非常識な, 狂気の

idioms:

• insane asylum    精神病院

العربيه (Arabic)
‏(صفه) مخبول, جنوني, معد للمجانين‏

עברית (Hebrew)
adj. - ‮לא-שפוי, משוגע, מטורף‬

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insane clown posse	insane clown posse pictures
insane clown comforter