Nouns

(n)muffa warm tubular covering for the hands
(n)fumble, muff(sports) dropping the ball

Verbs

(v)mufffail to catch, as of a ball
(v)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 upmake 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”