What is the meaning of mess up?

verb

• 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"
  • synonyms: botch, bodge, bumble, fumble, botch up, muff, blow, flub, screw up, ball up, spoil, muck up, bungle, fluff, bollix, bollix up, bollocks, bollocks up, bobble, mishandle, louse up, foul up, fuck up
• Disturb the smoothness of.
  • usage: "ruffle the surface of the water"
  • synonyms: ruffle, ruffle up, rumple
• Make a mess of or create disorder in.
  • usage: "He messed up his room"
  • synonyms: mess