adj., -zi·er, -zi·est.

1. Affected with madness; insane.
2. Informal. Departing from proportion or moderation, especially:
   1. Possessed by enthusiasm or excitement: The crowd at the game went crazy.
   2. Immoderately fond; infatuated: was crazy about boys.
   3. Intensely involved or preoccupied: is crazy about cars and racing.
   4. Foolish or impractical; senseless: a crazy scheme for making quick money.

n., pl. -zies.

One who is or appears insane: “To them she is not a brusque crazy, but ‘appropriately passionate’” (Mary McGrory).

idiom:

like crazy Informal.

1. To an exceeding degree: They were running around like crazy.

crazily cra'zi·ly adv.
craziness cra'zi·ness n.

adjective

1. Afflicted with or exhibiting irrationality and mental unsoundness: brainsick, daft, demented, disordered, distraught, dotty, insane, 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. Showing or having enthusiasm: ardent, enthusiastic, fervent, keen, mad, rabid, warm, zealous. Slang gung ho, nuts. See concern/unconcern.
3. So senseless as to be laughable: absurd, foolish, harebrained, idiotic, imbecilic, insane, lunatic, mad, moronic, nonsensical, preposterous, silly, softheaded, tomfool, unearthly, zany. Informal cockeyed, loony, loopy. Slang balmy, dippy, dopey, jerky, sappy, wacky. See ability/inability, knowledge/ignorance.

noun

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

Idioms beginning with crazy:
crazy about, be

See also drive someone crazy; like crazy.

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adj

Definition: infatuated, in love
Antonyms: dislike, hate

adj

Definition: mentally strange
Antonyms: balanced, realistic, reasonable, responsible, sane, sensible, smart

adj

Definition: unrealistic, fantastic
Antonyms: believable, realistic, reasonable, sensible

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IN BRIEF: Mentally ill. Also: very enthusiastic.

Part of being sane, is being a little bit crazy. — Ina T. Martin.

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Dansk (Danish)
adj. - vanvittig, tosset, gal, vild, fremragende, med patchwork, med brudflisemønster, faldefærdig
n. - synkefærdig

idioms:

• be crazy about    være vild med, være vildt forelsket i
• crazy paving    brudfliser
• crazy quilt    quiltning uden bestemt mønster
• like crazy    som en gal

Nederlands (Dutch)
gek, dolenthousiast, gemaakt van onregelmatige stukjes, instabiel (bouw)

Français (French)
adj. - fou, passionné de, étonnant, (US) formidable
n. - fou, passionné, (US) original (arg)

idioms:

• crazy about    être fou de, raffoler de
• crazy paving    (GB) dallage irrégulier en pierres plates
• crazy quilt    édredon en patchwork, patchwork
• like crazy    comme un enragé

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

idioms:

• crazy about    verrückt sein auf
• crazy paving    Mosaikpflaster
• crazy quilt    Flickendecke
• like crazy    wie verrückt

Ελληνική (Greek)
adj. - τρελό, παλαβιάρης, ξέφρενος, ερωτοχτυπημένος, παράταιρος, ακανόνιστος

idioms:

• be crazy about    τρελός (και παλαβός) για, ξεμυαλισμένος με
• crazy paving    οδοστρωσία με πλάκες και πέτρες ακανόνιστου σχήματος
• crazy quilt    πάπλωμα με ακανόνιστα σχέδια
• like crazy    σαν τρελός, με μεγάλη ένταση ή ενθουσιασμό

Italiano (Italian)
pazzo, matto, idiota

idioms:

• be crazy about    andare pazzo per
• crazy paving    selciato a mosaico irregolare
• crazy quilt    coperta a pezze
• like crazy    da matti

Português (Portuguese)
adj. - louco

idioms:

• be crazy about    ser louco por
• crazy paving    pavimento (m) esburacado
• crazy quilt    colcha (f) de retalhos
• like crazy    como doido, muito

Русский (Russian)
сумасшедший, абсурдный

idioms:

• be crazy about    сходить с ума по кому-либо
• crazy paving    булыжная мостовая
• crazy quilt    лоскутное одеяло
• like crazy    как сумасшедший

Español (Spanish)
adj. - loco, chiflado, disparatado, estrafalario, delirante
n. - loco, sujeto impredecible

idioms:

• crazy about    estar loco por, volverse loco por, ser fanático de
• crazy paving    enlosado de diseño irregular
• crazy quilt    colcha de retazos de distintos colores y tamaños
• like crazy    como un loco, con gran entusiasmo

Svenska (Swedish)
adj. - tokig, vansinnig, fallfärdig

中文（简体） (Chinese (Simplified))
发狂的, 狂热的, 疯子, 怪人, 政治狂人

idioms:

• be crazy about    对...疯狂
• crazy paving    用不规则形石板拼铺
• crazy quilt    碎布缝成的被单
• like crazy    拼命地, 发狂似地

中文（繁體） (Chinese (Traditional))
adj. - 發狂的, 狂熱的
n. - 瘋子, 怪人, 政治狂人

idioms:

• be crazy about    對...瘋狂
• crazy paving    用不規則形石板拼鋪
• crazy quilt    碎布縫成的被單
• like crazy    拼命地, 發狂似地

한국어 (Korean)
adj. - 미친듯한, 무분별한, 열중한
n. - 미친 사람, 광신자

idioms:

• be crazy about    ~에 미쳐 있는
• like crazy    무서운 기세로

日本語 (Japanese)
adj. - 過激派の人, 狂気の, 途方もない, 夢中の, 熱狂した, 欠陥の多い, ゆがんだ, 素敵な

idioms:

• be crazy about    夢中である
• crazy paving    乱れ敷
• crazy quilt    形の異なる端切れを継ぎ合わせたキルト
• like crazy    すごい勢いで, 猛烈に

العربيه (Arabic)
‏(صفه) مجنون, مغرم, مولع, معتوه‏

עברית (Hebrew)
adj. - ‮משוגע, מטורף, משגע‬
n. - ‮משוגע, מטורף‬

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crazy	Crazy Lenses
Crazy And Taxi	stir crazy