WordWeb Online

1. Make a mess of, destroy or ruin
   "I loused 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, muck up, bungle, fluff, bobble [N. Amer], mishandle, foul up, mess up, butcher, goof up, balls up, cock up [Brit]

Derived forms: louses up, loused up, lousing up

Type of: fail, go wrong, miscarry