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1. Make a mess of, destroy or ruin
   "I fouled up the dinner and we had to eat out";
   - botch, bodge [Brit, informal], bumble, fumble, botch up, muff [informal], blow, flub [N. Amer, informal], screw up [informal], spoil, muck up [informal], bungle, fluff [informal], bobble [N. Amer], mishandle, louse up [informal], mess up, butcher, goof up [informal], cock up [Brit, informal], balls up [informal], make a hash of [informal]

1. An embarrassing mistake
   - blunder, blooper [N. Amer, informal], bloomer [informal], bungle, pratfall [informal], flub [N. Amer, informal], botch, boner [N. Amer, informal], boo-boo [informal], goof [informal], boob [Brit, informal], blue [Austral, NZ, informal]

Derived forms: fouling up, foul-ups, fouls up, fouled up

Type of: error, fail, fault, go wrong, miscarry, mistake

Encyclopedia: Foul up