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Verb: muck up
  1. Make a mess of, destroy or ruin
    "I mucked up the dinner and we had to eat out";
    - botch, bodge [Brit], bumble, fumble, botch up, muff, blow, flub [N. Amer], screw up, ball up, spoil, bungle, fluff, bobble [N. Amer], mishandle, louse up, foul up, mess up, butcher, balls up, cock up [Brit], goof up
     
  2. Soil with mud, muck, or mire
    "The child mucked up his shirt while playing ball in the garden";
    - mire, muck, mud

Derived forms: mucked up, mucks up, mucking up

Type of: begrime, bemire [archaic], colly [archaic], dirty, fail, go wrong, grime, miscarry, soil