bumble


bumble (http://definr.com/bumble)

     v 1: make a mess of, destroy or ruin [syn: botch, 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}, mess up, fuck up]
     2: walk unsteadily [syn: stumble, falter]
     3: speak haltingly [syn: stutter, stammer, falter]