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

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 ​behaveextremely well and be very ​polite on a ​particularoccasion: 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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