chuck it

Chuck it in is informal British and Australian slang meaning to quit something — most often a job, project, or relationship that has become more trouble than it is worth. The phrase has a decisive, no-nonsense energy: you are not gracefully stepping down, you are tossing the whole thing aside. It often appears at moments of peak frustration, when someone has finally hit their limit and decided that walking away beats grinding on.

(slang) To quit (something, especially a job).

To chuck it up means to quit a job, usually on impulse or out of frustration rather than careful planning. It's the kind of phrase you use when you've reached your breaking point and decide to walk out the door, metaphorically tossing your position up in the air and not caring where it lands. The expression has a casual, fed-up British energy — the verbal equivalent of slamming a resignation letter on your manager's desk.