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screw up

 
See:
screw
part of speech: phrase
definition: (slang) to do (something) very badly; make a mess of; botch.
I accidentally ran a stop sign, so I screwed up my driver's test again!He only needed to make this last shot to win the game, but he screwed it up.She was so nervous that she might screw up her solo, but she made it through without a mistake.