The meaning of crazy is not mentally sound See ‘meaning & use’ for definitions, usage, and quotation evidence. Marked by thought or action that lacks reason
Businessman going crazy stock image. Image of head, anger - 35918095
How to use crazy in a sentence.
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:
Use the adjective crazy to describe actions that aren't sensible, like the crazy way your brothers run around the house when their favorite team wins a game Crazy can also mean insane, though in today's world, it is offensive to apply it to those who struggle with mental illness. If you describe someone or something as crazy, you think they are very foolish or strange. One who is or appears to be mentally deranged
To them she is not a brusque crazy, but 'appropriately passionate' (mary mcgrory). When she gets on the motorcycle she goes crazy Quotations he went crazy when he won. See examples of crazy used in a sentence.
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
