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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 definition: 1. stupid or not reasonable: 2. mentally ill: 3. annoyed or angry: . Learn more.

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

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

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

Sep 21, 2025 · Out of control. When she gets on the motorcycle she goes crazy. Very excited or enthusiastic. quotations He went crazy when he won.

Synonyms for CRAZY: foolish, stupid, mad, silly, absurd, idiotic, irrational, lunatic; Antonyms of CRAZY: wise, sound, sane, sensible, prudent, reasonable, judicious, clever

Discover everything about the word "CRAZY" in English: meanings, translations, synonyms, pronunciations, examples, and grammar insights - all in one comprehensive guide.

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