muck up

verb

mucked up; mucking up; mucks up

transitive verb

: to make a mess of : bungle, spoil

Synonyms of muck up

• fumble
• blow
• screw up
• foul up
• ruin
• goof (up)
• boot

Examples of muck up in a Sentence

I swear, she mucks up everything she tries.

Recent Examples on the Web

But life has a way of mucking up even the best plans, sometimes all at once and sometimes bit by bit and usually a little of both. — Brian Grubb, Vulture, 10 Aug. 2026

An exciting World Cup run mucked up by a president for whom muck might as well be a currency. — Gustavo Arellano, Los Angeles Times, 8 July 2026

Amid the memory shortage that's mucking up component prices globally, at least Qualcomm has some promising news for folks hoping to pay less for a daily driver. — Florence Ion, PC Magazine, 7 May 2026

Sure, all this meddling does muck up the pacing somewhat, but who cares? — Jeff Spry, Space.com, 27 Apr. 2026

Word History

First Known Use

1896, in the meaning defined above

Rhymes for muck up

• backup
• blowup
• breakup
• buildup
• checkup
• cleanup
• holdup
• hookup
• lineup
• lockup
• makeup
• markup