catflap.org Online Dictionary Query

  bollix up
       v : 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" [syn: botch, bumble,
           fumble, botch up, muff, blow, flub, screw up,
            ball up, spoil, muck up, bungle, fluff, bollix,
            bollocks, bollocks up, bobble, mishandle, louse
           up, foul up, mess up, fuck up]

  bollix up /bˈɒlɪks ˈʌp/
  vermasseln, durcheinanderbringen, verpfuschen 
        "bollix up sth."  - etw. vermasseln
     Synonym: bollix
  
   see: bollixing, bollixing up, bollixed, bollixed up
  

  30 Moby Thesaurus words for "bollix up":
     ball up, bollix, bugger, bugger up, confound, confuse, cook,
     foul up, fumble, garble, gum up, hash up, jumble, louse up,
     mess up, mix up, muck up, muddle, pi, play hell with,
     play hob with, queer, riffle, scramble, screw up, shuffle, sink,
     snafu, snarl up, tumble