The meaning of crazy is not mentally sound Marked by thought or action that lacks reason How to use crazy in a sentence. One who is or appears to be mentally deranged To them she is not a brusque crazy, but 'appropriately passionate' (mary mcgrory). See examples of crazy used in a sentence.
Crazy (comparative crazier, superlative craziest) of unsound mind [from 17th c.] synonym quotations synonyms Insane his ideas were both frightening and crazy. If you describe someone or something as crazy, you think they are very foolish or strange. Crazy adjective (interested) [ after noun ] used for saying that someone thinks about something all the time or wants it very much, in a way that some people might think is extreme:
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