as in fumbling
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 mucking up
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
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
Chris Gardner, HollywoodReporter, 14 Nov. 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
Recent Examples of Synonyms for mucking up
Verb
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Super Bowl 60 saw the Seattle Seahawks claim victory over the New England Patriots, but there were plenty of other winners — and losers — off the field during the game, with some brands scoring with their commercials and others fumbling their attempts for a loss.—
Aimee Picchi,
CBS News,
9 Feb. 2026
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The Blue Demons’ guard panicked, fumbling the ball, and Fudd read her perfectly.—
Emily Adams,
Hartford Courant,
5 Feb. 2026
Verb
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Right now, Iranians are blaming, appropriately, the regime for screwing up the country.—
CBS News,
CBS News,
11 Jan. 2026
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Tim overcame his fear of screwing up again and asked Lucy to move in.—
Nellie Andreeva,
Deadline,
6 Jan. 2026
Verb
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Small armies of residents still gather to observe federal officers from cars or on foot – honking horns and blowing whistles to alert neighbors.—
Ray Sanchez,
CNN Money,
8 Feb. 2026
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After blowing a 22-point lead in Friday’s loss to the Celtics in Boston, the Heat closed its quick two-game trip at 1-1.—
Anthony Chiang,
Miami Herald,
8 Feb. 2026
Cite this Entry
“Mucking up.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/mucking%20up. Accessed 15 Feb. 2026.
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