teach your grandmother to suck eggs Meaning in the Cambridge English Dictionary
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Meaning of “teach your grandmother to suck eggs” in the English Dictionary

"teach your grandmother to suck eggs" in British English

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teach your grandmother to suck eggs

UK disapproving to give ​advice to someone about a ​subject that they already ​know more about than you
(Definition of teach your grandmother to suck eggs from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)
Translations of “teach your grandmother to suck eggs”
in Chinese (Simplified) 班门弄斧…
in Chinese (Traditional) 班門弄斧…
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