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.
Rhymes
- cash machine
- cashmere
- cash nexus
- cash on delivery
- cashpoint
- cash ratio
- cash register
- cash-rich
- cash something in (or cash out)
- cash-strapped
- cash up (or cash out)
- casing
- casino
- casino bank
- casino banker
- casino banking
- casita
- cask
- cask beer
- cask-conditioned
- casket
- cask strength
- cask wine
- Caslon
- Casnewydd