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
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
What's mucking up the process is a telepathic outlier named The Mule (Pilou Asbæk), whose ravenous appetite for galactic dominance has created anomalies in Seldon's branching prognostications of how this whole ordeal will unfold.
—Jeff Spry, Space.com, 29 Aug. 2025
The hydrogen flow keeps vaporized tin from mucking up the system’s optics.
—IEEE Spectrum, 12 June 2023
See All Example Sentences for muck up
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
What's mucking up the process is a telepathic outlier named The Mule (Pilou Asbæk), whose ravenous appetite for galactic dominance has created anomalies in Seldon's branching prognostications of how this whole ordeal will unfold.
—Jeff Spry, Space.com, 29 Aug. 2025
The hydrogen flow keeps vaporized tin from mucking up the system’s optics.
—IEEE Spectrum, 12 June 2023
See All Example Sentences for muck up
Recent Examples of Synonyms for muck up
Verb
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In the 88th minute, Neuer fumbled a routine shot and allowed Joselu to equalise.—
Sebastian Stafford-Bloor,
New York Times,
8 Apr. 2026
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Fans were exiting en masse in the top of the ninth when Frelick’s RBI single off Rule 5 rookie Ryan Watson, fumbled by reigning AL Gold Glove centerfielder Ceddanne Rafaela, increased Milwaukee’s lead to three.—
Gabrielle Starr,
Boston Herald,
7 Apr. 2026
Verb
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The Mets, who are a close second to LA with a $370 million payroll and over $500 million due in payments this year thanks to the luxury tax, have now lost 11 straight games after blowing a ninth inning lead to the Cubs on Sunday.—
Ian Miller OutKick,
FOXNews.com,
21 Apr. 2026
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Matt Strahm struck out the side in the eighth inning, but Erceg allowed three walks and blew a save opportunity.—
Kansas City Star,
Kansas City Star,
21 Apr. 2026
Verb
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These days, revivals that just manage to come and go without screwing up are seen as, if not a success, than an acceptable effort.—
Ben Travers,
IndieWire,
10 Apr. 2026
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But what really screws up Julia are the deliveries.—
Pete Hammond,
Deadline,
17 Mar. 2026
Verb
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There was Anthony Edwards brashly asking Watson if the Nuggets planned to foul up three at the end of regulation, before draining an incredible shot to force overtime.—
Bennett Durando,
Denver Post,
12 Apr. 2026
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But their strategy was fouled up when the car’s occupants switched on the headlights, throwing a glare up the tote road along which the wardens had planned to sprint.—
Dave Duffey,
Outdoor Life,
26 Mar. 2026
Verb
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These tenacious insects discreetly land on your skin, leaving sudden, itchy, and painful bites that can swell and turn red, ruining a perfectly pleasant outdoor evening.—
Louise Parks,
Martha Stewart,
18 Apr. 2026
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Who knew that an attempt to ruin Iran’s navy and army would result in the demilitarization of the West?—
Rachel Marsden,
Hartford Courant,
17 Apr. 2026
Verb
-
But Kumar developed a fever, and the driver booted him off.—
Diaa Hadid,
NPR,
10 Apr. 2026
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Turner booted a sure double-play ball in the fifth inning.—
Matt Gelb,
New York Times,
8 Apr. 2026
Cite this Entry
“Muck up.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/muck%20up. Accessed 23 Apr. 2026.
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