be on your best behaviour

listen to the pronunciation of be on your best behaviour
English - Turkish
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English - English

Definition of be on your best behaviour in English English dictionary

be on one's best behaviour
(deyim) Behave extremely well and be very polite on a particular occasion

1. Now children, I want you all to be on your best behaviour when grandma arrives. 2. I'd just met his parents for the first time so I was on my best behaviour.

be on your best behaviour
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