as in to fumble
to make or do (something) in a clumsy or unskillful way
I swear, she mucks up everything she tries
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Recent Examples of muck up
Well, the first and third mucked up their stories with some overly contrived lore about cults and gods, and the fourth was an experiment for the formula that didn’t quite work.
—
Alison Foreman, IndieWire, 23 Jan. 2026
At least not Will Welch, GQ’s longstanding editor-in-chief and global editorial director, who was absolutely zen about the threat of an atmospheric river mucking up the mag’s Men of the Year celebration last night.
—Chris Gardner, HollywoodReporter, 14 Nov. 2025
Lawmakers need to get back to Washington to end the government shutdown - a shutdown that has mucked up travel plans around the country by contributing to widespread flight delays.
—Zachary Schermele, USA Today, 11 Nov. 2025
While the Governor's Cup may be safe, there are other ways the ACC's and SEC's scheduling moves could muck up Louisville's future football schedules.
—Payton Titus, Louisville Courier Journal, 25 Sep. 2025
See All Example Sentences for muck up
Alison Foreman, IndieWire, 23 Jan. 2026
At least not Will Welch, GQ’s longstanding editor-in-chief and global editorial director, who was absolutely zen about the threat of an atmospheric river mucking up the mag’s Men of the Year celebration last night.
—Chris Gardner, HollywoodReporter, 14 Nov. 2025
Lawmakers need to get back to Washington to end the government shutdown - a shutdown that has mucked up travel plans around the country by contributing to widespread flight delays.
—Zachary Schermele, USA Today, 11 Nov. 2025
While the Governor's Cup may be safe, there are other ways the ACC's and SEC's scheduling moves could muck up Louisville's future football schedules.
—Payton Titus, Louisville Courier Journal, 25 Sep. 2025
See All Example Sentences for muck up
Recent Examples of Synonyms for muck up
Verb
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After South Korea’s goalkeeper fumbled a ball, Luis Romo scored the goal that gave the Mexicans six points and pushed them to the top of the standings.—
Los Angeles Times,
Los Angeles Times,
20 June 2026
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OnlyFans fumbled a previous version of this dilemma.—
Gustavo Turner,
HollywoodReporter,
17 June 2026
Verb
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The Philadelphia Phillies went into the top of the ninth inning down 8-6 to the Washington Nationals after Orion Kerkering gave up a three-run home run to blow the lead late in the game.—
Scott Thompson,
FOXNews.com,
24 June 2026
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While sitting on your porch or deck, a blast of air from a fan can help blow weak-flying mosquitoes away.—
Steve Bender,
Southern Living,
23 June 2026
Verb
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But four years ago, Sorsby screwed up in a massive way.—
Trey Wallace OutKick,
FOXNews.com,
2 June 2026
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The two screwed up a top-rope stunner as Excalibur struggled to explain what happened like a 2026 Jim Ross.—
Alfred Konuwa,
Forbes.com,
24 May 2026
Verb
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In the end, though, neither an explosion nor a giant spill of fluid that could foul up waterways and the ocean occurred.—
Hannah Fry,
Los Angeles Times,
27 May 2026
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An incorrect connection or approach can foul up a line, damage a plane or cause an accident.—
Tara Copp The Washington Post,
Arkansas Online,
25 May 2026
Verb
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Don't Worry Too Much About Saltwater Or Chlorine Many people assume a quick swim in the ocean or pool will ruin their sunglasses.—
Gabi De la Rosa,
Southern Living,
20 June 2026
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Could the Boston Celtics or another team ruin the Heat’s plan, swooping in and trading for Antetokounmpo this offseason and getting a long-term commitment from him?—
Anthony Chiang
June 19,
Miami Herald,
19 June 2026
Verb
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No Toy Story 5 isn’t taking long to boot Steven Spielberg’s alien thriller Disclosure Day out of the top spot at the domestic box office.—
Tim Lammers,
Forbes.com,
20 June 2026
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But Edson Álvarez jumped high to boot it away from the goal line with an overhead kick, landing on his back in the process.—
Andrew Greif,
NBC news,
19 June 2026
Cite this Entry
“Muck up.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/muck%20up. Accessed 25 Jun. 2026.
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