From WordNet (r) 3.0 (2006):
fumble
n 1: (sports) dropping the ball [syn: fumble, muff]
v 1: feel about uncertainly or blindly; "She groped for her
glasses in the darkness of the bedroom" [syn: grope,
fumble]
2: make one's way clumsily or blindly; "He fumbled towards the
door" [syn: fumble, blunder]
3: handle clumsily
4: make a mess of, destroy or ruin; "I botched the dinner and we
had to eat out"; "the pianist screwed up the difficult
passage in the second movement" [syn: botch, bodge,
bumble, 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]
5: drop or juggle or fail to play cleanly a grounder; "fumble a
grounder"