- (transitive) to bungle; mismanage
- (transitive) to make dirty; contaminate
- to be or cause to be blocked, choked, or entangled
- a state of confusion or muddle caused by bungling
Example Sentences Including 'foul up'
But Aston Villa or Charlton could nick fifth and a UEFA Cup spot if the Merseysiders foul up in their final four games.
Sun, News of the World (2004)
If nothing else, Torre has been smart enough not to foul up a good team.
Globe and Mail (2003)
Often, it's the little things that can foul up your best-laid plans.
Going For It!: How to Succeed As an Entrepreneur
Rhinemaidens Frivolous creatures who foul up their only duty, namely guarding the gold in the Rhine.
Times, Sunday Times (2004)
Without a copy of your important files - the back-up - something is liable to foul up and cost you dearly.
The Advertiser, Sunday Mail (2004)
to comment on this word.