be on your best behaviour Meaning in the Cambridge English Dictionary Cambridge dictionaries logo
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Meaning of “be on your best behaviour” in the English Dictionary

"be on your best behaviour" in British English

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be on your best behaviour

to behave extremely well and be very polite on a particular occasion: I'd just met his parents for the first time so I was on my best behaviour.
(Definition of be on your best behaviour from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)
Translations of “be on your best behaviour”
in Chinese (Simplified) 举止得体, 以最好的表现示人…
in Chinese (Traditional) 舉止得體, 以最好的表現示人…
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