buck up

Từ điển Oxford Advanced Learner 8th

ˌbuck ˈup derived
(informal)
1. (often in orders)to become more cheerful
Syn: ↑cheer up
•Buck up, kid! It's not the end of the game.
2. buck up! (old-fashioned)used to tell sb to hurry
Syn: ↑hurry up
Main entry: ↑buck_derived