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English definition of “monkey business”

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monkey business

noun [U]  /ˈmʌŋ·ki ˌbɪz·nəs/ us  
dishonest or illegal behavior: There’s been some monkey business connected with his tax returns.
Translations of “monkey business”
in Chinese (Traditional) 騙人的把戲, 惡作劇…
in Chinese (Simplified) 骗人把戏, 恶作剧…
(Definition of monkey business from the Cambridge Academic Content Dictionary © Cambridge University Press)
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