WordWeb Online

1. Make a mess of, destroy or ruin
   "I mishandled 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], louse up [informal], foul up, mess up, butcher, goof up [informal], cock up [Brit, informal], balls up [informal], make a hash of [informal]
    
2. Manage badly or incompetently
   "The funds were mishandled";
   - mismanage, misconduct

Derived forms: mishandled, mishandling, mishandles

Type of: care, deal, fail, go wrong, handle, manage, miscarry