- not sensible; stupid
- Are you crazy? We could get killed doing that.
- I'd never do anything like that. That's just crazy.
- He drove like an idiot, passing in the craziest places.
- What a crazy idea!
- ‘Love makes you do crazy things,’ she said.
- I know it sounds crazy but it just might work.
- be crazy to do something She must be crazy to lend him money.
- it is crazy to do something It's crazy to think he'll ever change.
Extra Examples- Do you think I'm crazy?
- You're acting like a crazy person.
- Things got crazy for a while.
Oxford Collocations Dictionaryverbs- be
- seem
- sound
- …
- really
- absolutely
- completely
- …
- with
Definitions on the go
Look up any word in the dictionary offline, anytime, anywhere with the Oxford Advanced Learner’s Dictionary app.
- (especially North American English) very angry
- That noise is driving me crazy.
- Marie says he went crazy, and smashed the room up.
- Doesn't it make you crazy when people don't reply to your emails?
Extra ExamplesTopics Feelingsa2- She went crazy at me for letting the dog out.
- The kids would answer back and that drove him crazy.
Oxford Collocations Dictionaryverbs- be
- go
- drive somebody
- …
- absolutely
- completely
- at
- (often in compounds) very enthusiastic or excited about something
- The crowd went crazy when the band came on stage.
- This food is so good it's driving me crazy.
- crazy about something Rick is crazy about football.
- She's football-crazy.
- I'm not crazy about jazz (= I don't like it very much).
Extra ExamplesTopics Feelingsa2- The group's performance always drives the audience crazy.
- We were crazy with excitement.
- crazy about somebody liking somebody very much; in love with somebody
- I've been crazy about him since the first time I saw him.
- (often offensive) having a mental illness that makes somebody unable to think or behave normally It is usually considered offensive to use crazy to mean ‘mentally ill’. You can use it to mean ‘not sensible’: a crazy idea . You can also use it to mean very angry, very enthusiastic or very excited: She'll go crazy if she finds out. • The crowd went crazy.
- I'd go crazy if I lived here.
- She was driven half-crazy by the thought of him in prison.
Which Word? Talking about mental healthTalking about mental healthsee also stir-crazy- Do not use the words mad or crazy to describe somebody who has a mental illness. You can say that somebody has a mental illness, has mental health issues/problems or is mentally ill:
- I have experienced mental health issues since the age of 14.
- The pressure made her mentally ill.
- I have an anxiety disorder.
- He had a psychotic episode.
- Disturbed can be used to describe somebody who has problems with mental health because of very unhappy or unpleasant experiences:
- He works with emotionally disturbed children.
- Insane is a formal or old-fashioned term used in the past to describe somebody with a serious mental illness. It can now be offensive, although it still has a technical use in law meaning that somebody is not able to understand that their own actions are wrong or not able to understand a trial process:
- The question is, was the man insane when he committed the crime?
Oxford Collocations Dictionaryverbs- be
- seem
- sound
- …
- really
- absolutely
- completely
- …
- with
Idioms
See crazy in the Oxford Advanced American Dictionarylike crazy/mad
- (informal) very fast, hard, much, etc.
- We worked like crazy to get it done on time.
Check pronunciation:
crazy