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English definition of “crazy”

crazy

adjective (NOT SENSIBLE)    /ˈkreɪ.zi/
A2 stupid or not reasonable: It's a crazy idea. You're crazy to buy a house without seeing it.Stupid and sillyOf unsound mind mentally ill: I seriously think she'll go crazy if she doesn't have a holiday soon.Of unsound mindStupid and silly crazily     /-zɪ.li/ adverb Stupid and sillyOf unsound mind craziness     /-nəs/ noun [U] Stupid and silly behaviour
(Definition of crazy adjective (NOT SENSIBLE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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