botch
bodge
bumble
fumble
botch up
muff
blow
flub
screw up
ball up
spoil
muck up
bungle
fluff
bollix
bollix up
bollocks
bollocks up
bobble
mishandle
louse up
foul up
mess up
fuck up
make a mess of, destroy or ruin
I botched the dinner and we had to eat out
the pianist screwed up the difficult passage in the second movement