cock something up

Từ điển Oxford Advanced Learner 8th

ˌcock sthˈup derived
(BrE, slang)to ruin sth by doing it badly, or by making a careless or stupid mistake
Syn: ↑bungle
•I really cocked that exam up!
•She cocked up all the arrangements for the party.
related noun ↑cock-up
Main entry: ↑cock_derived