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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Do not fumble this opportunity to select a governor that is a true progressive candidate.—
Eleanor Dearman,
Fort Worth Star-Telegram,
14 Feb. 2026
-
In turn, the Heat fumbled it away.—
Ira Winderman,
Sun Sentinel,
10 Feb. 2026
Verb
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For his part, the analyst says he was terminated for attempting to blow the whistle on GVA’s fraudulent behavior.—
Paul Flahive,
Austin American Statesman,
16 Feb. 2026
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Whitney is gazing into the middle distance, contemplating a runner on a Lithuanian passport, when Ferdinand blows the world of season four apart.—
Amanda Whiting,
Vulture,
16 Feb. 2026
Verb
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First of all, don’t hide misdeeds and screwups, which comes naturally by not committing misdeeds and not screwing up.—
Eleanor Dearman,
Fort Worth Star-Telegram,
14 Feb. 2026
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Kid Rock‘s lip-synch was screwed up.—
Cheyenne Roundtree,
Rolling Stone,
10 Feb. 2026
Verb
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The funding lapse led to delayed or suspended economic data, wreaked havoc at airports as flights were canceled due to air traffic controller shortages and fouled up the Supplemental Nutrition Assistance Program.—
Fred Imbert,
CNBC,
13 Nov. 2025
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Also, if Utah or Miami were to score an upset in the opening round, St. Louis would have first dibs at taking that team instead of Orlando, which would foul up these predictions completely.—
Todd Boss,
Forbes.com,
15 Aug. 2025
Verb
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That was what Ilia Malinin endured on Friday night, when his disastrous free skate ruined his chances for gold.—
Dave Skretta,
Chicago Tribune,
15 Feb. 2026
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Steam cleaning is an effective way to sanitize and refresh your mattress, but the wrong technique can end up ruining the fabric.—
Madeline Buiano,
Martha Stewart,
15 Feb. 2026
Verb
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In fact, the IOC might consider booting the sport altogether in June.—
Dana ONeil,
CNN Money,
10 Feb. 2026
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Patriots rookie Andy Borregales booted the ball into the endzone for a touchback.—
February 9,
CBS News,
9 Feb. 2026
Cite this Entry
“Muck up.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/muck%20up. Accessed 17 Feb. 2026.
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