0 an occasion when something is spoiled by a stupid mistake:
This investigation has been mismanaged right from the start - I've never seen such a foul-up.
That belief led to the foul-up and disaster when we last restructured local government.
Definite benefits will accrue to a political party that admits that it has made a complete foul-up and has changed its policy.
Pressing the path of politics too strongly has caused the present foul-up.
There must have been a foul-up somewhere.
Who is responsible for the foul-up?
The word blooper was not allowed to be uttered, with the term foul-up substituted where applicable.
Snapper becomes separated from the others and a foul-up with his powers temporarily drives him insane.
I am sure that he agrees that we do not want any more traditional computer foul-ups.
