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]