The meaning of crazy is not mentally sound 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 Marked by thought or action that lacks reason
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How to use crazy in a sentence.
If you describe someone or something as crazy, you think they are very foolish or strange.
Crazy (comparative crazier, superlative craziest) of unsound mind [from 17th c.] synonym quotations synonyms Insane his ideas were both frightening and crazy. 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:
One who is or appears to be mentally deranged To them she is not a brusque crazy, but 'appropriately passionate' (mary mcgrory).
