be on your best behaviour
US /bi ɑn yʊər bɛst bɪˈheɪvjər/
UK /bi ɑn yʊər bɛst bɪˈheɪvjər/
1.
bertingkah laku sebaik mungkin, berperilaku sopan
to act in the most polite and proper way possible, especially in a situation where you want to make a good impression
:
•
When you meet my parents, I expect you to be on your best behaviour.
Saat kamu bertemu orang tuaku, aku berharap kamu bertingkah laku sebaik mungkin.
•
The children were told to be on their best behaviour during the school trip.
Anak-anak diberitahu untuk bertingkah laku sebaik mungkin selama perjalanan sekolah.