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