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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.

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

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

Jan 20, 2026 · Out of control. When she gets on the motorcycle she goes crazy. Very excited or enthusiastic. He went crazy when he won.

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 …

There are 17 meanings listed in OED's entry for the adjective crazy, two of which are labelled obsolete, and one of which is considered offensive. See ‘Meaning & use’ for definitions, usage, …

Unsound of mind; mentally unbalanced or deranged; psychopathic; insane. Of or for an insane person. An eccentric or mentally unbalanced person. Used to express approval, pleasure, …

5 days ago · This guide presents 35 other ways to say “crazy”, each explained with meaning, usage, examples, best and worst contexts, and tone guidance. These alternatives help you …

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