"muffs" in the noun sense
1. muff
a warm tubular covering for the hands
2. fumble, muff
sports) dropping the ball
"muffs" in the verb sense
1. muff
fail to catch, as of a ball
2. 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
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"
Source: WordNet® (An amazing lexical database of English)
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