Tra từ crazy - Từ điển Oxford Advanced Learner 8th

crazy [crazy crazier craziest] adjective, noun BrE [ˈkreɪzi] NAmE [ˈkreɪzi]
adjective (cra·zier, crazi·est)(informal)
1. (especially NAmE)not sensible; stupid
• Are you crazy? We could get killed doing that.
• She must be crazy to lend him money.
•He drove like an idiot, passing in the craziest places.
•What a crazy idea!
•I know it sounds crazy but it just might work.
2. very angry
• That noise is driving me crazy.
• Marie says he went crazy, and smashed the room up.
3. ~ (about sth) (often in compounds)very enthusiastic or excited about sth
• Rick is crazy about football.
• He's football-crazy.
•I'm not crazy about Chinese food (= I don't like it very much).
•The crowd went crazy when the band came on stage.
•You're so beautiful you're driving me crazy.
4. ~ about sb liking sb very much; in love with sb
• I've been crazy about him since the first time I saw him.
5. (especially NAmE)mentally ill; ↑insane
• She's crazy— she ought to be locked up.

Thesaurus:
crazy adj.
1. (especially AmE, informal, usually disapproving)
•Are you crazy? We could get killed doing that.
stupid • • idiotic • • reckless • |especially spoken silly • |informal insane • |especially AmE, informal dumb • |especially BrE, informal mad • |especially written foolish •
crazy/stupid/idiotic/reckless/silly/insane/dumb/mad/foolish to do sth
crazy/stupid/idiotic/reckless/silly/insane/dumb/mad/foolish of sb to do sth
a/an crazy/stupididiotic/reckless/silly/insane/dumb/mad/foolish thing to do
Are you crazy/stupid/dumb/mad/insane?
Which word? Stupid, silly, foolish and dumb describe people or their actions. Crazy usually describes a person, but it can also be used to describe a deliberate and dangerous action. All these words are usually disapproving and can be offensive.
2. (especially AmE, informal, sometimes offensive)
•The noise was driving her crazy.
sometimes offensive mad • • out of your mind • • (not) in your right mind • |informal nuts • |especially BrE, informal batty •
be crazy/mad/out of your mind/not in your right mind/nuts to do sth
go crazy/mad/nuts/batty
drive sb crazy/mad/out of their mind/nuts/batty
Which word? These are all rather informal words used to suggest that sb's behaviour is very strange, often because of extreme emotional pressure. They can be offensive if used to describe sb sufferingfroma real mental illness; use mentally ill instead.

Synonyms:
mad
crazy • nuts • batty • out of your mind • (not) in your right mind
These are all informal words that describe sb who has a mind that does not work normally.
mad • (informal, especially BrE) having a mind that does not work normally: ▪ I thought I'd go mad if I stayed any longer.
Mad is an informal word used to suggest that sb's behaviour is very strange, often because of extreme emotional pressure. It is offensive if used to describe sb suffering from a real mental illness; use mentally ill instead. Mad is not usually used in this meaning in North American English; use crazy instead.
crazy • (informal, especially NAmE) having a mind that does not work normally: ▪ A crazy old woman rented the upstairs room.
Like mad, crazy is offensive if used to describe sb suffering from a real mental illness.
nuts • [not before noun] (informal) mad: ▪ That noise is driving me nuts! ◇ ▪ You guys are nuts!
batty • (informal, especially BrE) slightly mad, in a harmless way: ▪ Her mum's completely batty.
out of your mind • (informal) unable to think or behave normally, especially because of extreme shock or anxiety: ▪ She was out of her mind with grief.
(not) in your right mind • (informal) (not) mentally normal: ▪ No one in their right mind ▪ would choose to work there.
to be mad/crazy/nuts/out of your mind/not in your right mind to do sth
to go mad/crazy/nuts/batty
to drive sb mad/crazy/nuts/batty/out of their mind
completely mad/crazy/nuts/batty/out of your mind

Example Bank:
•He went crazy at me for letting the dog out.
•I'd go crazy if I lived here.
•The group's performance always drives the audience crazy.
•The kids would answer back, and that drove her crazy.
•We were crazy with excitement.
•A crazy old woman rented the upstairs room.
•Do you think I'm crazy?
•He drove like a madman, passing in the craziest places.
•I know it sounds crazy, but it just might work.
•She was driven half-crazy by the thought of him in prison.
Idiom: ↑like mad
Derived Words: ↑crazily ▪ ↑craziness

noun (pl. crazies)(informal, especially NAmE)a crazy person