not be born yesterday definition, meaning - what is not be born yesterday in the British English Dictionary & Thesaurus - Cambridge Dictionaries Online

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English definition of “not be born yesterday”

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not be born yesterday

to not be stupid or easy to deceive: You don't fool me - I wasn't born yesterday.
Translations of “not be born yesterday”
in Chinese (Traditional) 不傻, 不易上當…
in Chinese (Simplified) 不傻, 不易上当…
(Definition of not be born yesterday from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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