Meaning of “crazy” - Learner’s Dictionary

crazy

adjective us uk /ˈkreɪzi/
Extra Examples
He'd be crazy to refuse an offer like that.You're going out in all this snow! Are you crazy?Why would she do a thing like that? She must be crazy!Oliver's going to go crazy when he sees the state of this car!Work is driving me crazy at the moment.
STUPID

A2 stupid or strange:

a crazy idea
I was crazy not to take that job.
ANGRY

B2 annoyed or angry:

The children are driving me crazy (= making me annoyed).
Dad went crazy when I told him what had happened.
be crazy about sb/sth

A2 to love someone very much, or to be very interested in something:

Mia's crazy about baseball.
go crazy

to become very excited about something:

When he came on stage the audience went crazy.
like crazy informal

If you do something like crazy, you do a lot of it, or do it very quickly:

We worked like crazy to get everything finished.
crazily adverb
craziness noun [ U ]

(Definition of “crazy” from the Cambridge Learner’s Dictionary © Cambridge University Press)