cock-up 
noun British informal
Something done badly or inefficiently: we’ve made a total cock-up of it...
- If you took all my mistakes and cock-ups in my life and laid them out in a line, you would say this guy is the most stupid and inept person ever.
- The most incredible feature of this success is that he has achieved it after so many cock-ups, mistakes and bad calls.
- To those hacks like me who find life littered, as it were, with cock-ups rather than conspiracies, this is rather more plausible.
