Online Google Dictionary

mess up wordnet sense
  1. ballup: something badly botched or muddled
  2. botch: 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"
  3. ruffle: disturb the smoothness of; "ruffle the surface of the water"
  4. mess: make a mess of or create disorder in; "He messed up his room"
  5. To make a mess of; to untidy, disorder, soil, or muss; To cause a problem with; to introduce an error or mistake in; to make muddled or confused; spoil; ruin; To botch, bungle; to perform poorly on; To make a mistake; to do something incorrectly; to perform poorly; To cause (another person) ...