kook

noun
🔊/kuːk/
🔊/kuːk/
(informal, especially North American English)
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  1. a person who acts in a strange or crazy way怪人;狂人
    • He was dismissed as a kook for saying what he thought.他因说出自己的想法而被驳回。
    Topics Personal qualitiesc2
    Word Origin1960s: probably from cuckoo.