1
as in fumbling
to make a mistake
everything is riding on this project, so we can't afford to louse up
Synonyms & Similar Words
Relevance
2
as in screwing up
to make or do (something) in a clumsy or unskillful way
I loused up the wallpapering job in the bedroom—the seams show too much
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
Recent Examples of Synonyms for lousing up
Verb
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With the title in their grasp, the Ducks have greased up their fingers, fumbling into a four-game winless slump.—
Andrew Knoll,
Oc Register,
4 Apr. 2026 -
Last season’s Detroit Tigers endured the worst divisional collapse in history, fumbling an AL Central lead that reached 15 1/2 games in July.—
Cody Stavenhagen,
New York Times,
25 Mar. 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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Right now, Iranians are blaming, appropriately, the regime for screwing up the country.—
CBS News,
CBS News,
11 Jan. 2026
Verb
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Garrett Mitchell lined a tiebreaking single in the eighth inning and the Milwaukee Brewers beat the stumbling Boston Red Sox 8-6 on Monday night, sending them to their eighth loss in nine games.—
ABC News,
ABC News,
6 Apr. 2026
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On March 22, Emily Holman posted a TikTok video about her and her 18-year-old sister, Martha, stumbling upon a jean jacket that was hand-painted and gifted to a friend for Christmas.—
Michelle Lee,
PEOPLE,
3 Apr. 2026
Verb
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Try to find a place that will block blowing or falling debris.—
CA Weather Bot,
Sacbee.com,
7 Apr. 2026
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The city did not adopt its own grocery tax to replace it, blowing a roughly $80 million hole in its budget.—
Jeremy Gorner,
Chicago Tribune,
5 Apr. 2026
Verb
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Other people’s opinions, or slipping up and saying the wrong thing?—
Jordan Robinson,
SELF,
19 Mar. 2026
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Smart’s Bulldogs could now do with the Crimson Tide slipping up to improve their conference prospects, with Texas A&M still out in front as the SEC’s only unbeaten team.—
Ben Verbrugge,
MSNBC Newsweek,
8 Nov. 2025
Verb
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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
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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
Verb
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Johnston was whistled for tripping Matt Boldy in the final minute of the first, and the Wild power play needed just seconds to give them their first lead.—
Jess Myers,
Twin Cities,
10 Apr. 2026
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While tripping with the foot is not allowed, an ankle tap, which is performed with the hand, is considered a tackle and is permissible.—
BestReviews,
Mercury News,
8 Apr. 2026
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Cite this Entry
“Lousing up.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/lousing%20up. Accessed 12 Apr. 2026.
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