The meaning of CRAZY is not mentally sound : marked by thought or action that lacks reason : insane —not used technically. How to use crazy in a sentence.

Crazy can also mean behaving in a strange way esp. because of stress, as if you are mentally ill:

One who is or appears to be mentally deranged: "To them she is not a brusque crazy, but 'appropriately passionate'" (Mary McGrory).

to an extreme: We shopped like crazy and bought all our Christmas gifts in one afternoon. Idioms with great speed or recklessness: He drives like crazy once he's out on the highway.

If you describe someone or something as crazy, you think they are very foolish or strange.

Caused by or arising from mental derangement; marked by or manifesting insanity: as, a crazy speech; crazy actions. from the GNU version of the Collaborative International Dictionary of …

6 days ago · (informal) Very unexpected; wildly surprising. Near-synonym: amazing The game had a crazy ending.

CRAZY meaning: 1 : not sane: such as; 2 : having or showing severe mental illness

Definition of crazy adjective in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

CRAZY definition: 1. stupid or strange: 2. annoyed or angry: 3. to love someone very much, or to be very interested…. Learn more.