muff
[verb]
Synonyms: botch, blow, bobble, bollix, bungle, flub, fluff, goof (up), louse up, screw (up)

[TahlilGaran] English Synonym Dictionary ▲

I. muff¹ /mʌf/ noun [countable]
[Date: 1500-1600; Language: Dutch; Origin: mof, from Medieval Latin moffula 'glove']
a short tube of thick cloth or fur that you can put your hands into to keep them warm in cold weather ⇒ earmuffs

[TahlilGaran] Dictionary of Contemporary English ▲

II. muff² verb [transitive] informal

1. (also muff something ↔ up) to spoil a chance to do something well or achieve something:
You’ll probably only get one chance to take a photo, so don’t muff it!

2. to fail to catch a ball or kick it properly in a game or sport:
With only the goalkeeper to beat, he completely muffed his shot.

3. muff your lines British English if you muff your lines in a play you are acting in, you forget them or say them wrongly

[TahlilGaran] Dictionary of Contemporary English ▲