be on your best behaviour Definition in the Cambridge English Dictionary
Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

Definition of “be on your best behaviour” - English Dictionary

Definition of "be on your best behaviour" - British English Dictionary

See all translations

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 Learners 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…
Add Cambridge dictionaries to your browser to your website
Word of the Day
public school

in England, an expensive type of private school (= school paid for by parents not by the government)

Word of the Day