1. buck up - Verb
2. buck up - Interjection
3. buck up - Phrase
gain courage
Source: WordNetBuck up or stay in the truck. Sarah Palin
Suck it up. This is the life you chose for yourself, so buck up and deal. Lauren Myracle
But we need to buck up and elect another neoliberal corporate stooge who's marginally better than the current neoliberal corporate stooge. Source: Internet
But, hey, buck up there, sad conservatives. Source: Internet
Dem laugh an a chat how amazing it is dat outa di whole a New York City dem goh buck up. Source: Internet
Instead of concocting make-believe stories about an afterlife, it is preferable to face reality, buck up to death as extinction, and enjoy what life we have in the meantime. Source: Internet