bollocks up
Verb
Meaning
make a mess of, destroy or ruin
Source: WordNetSynonyms
bumble
muff
bungle
blow
fumble
spoil
fluff
bollocks
bobble
botch
bodge
mishandle
ball up
foul up
flub
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Antonyms
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Examples
I botched the dinner and we had to eat out
the pianist screwed up the difficult passage in the second movement