1
as in to stumble
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 to fumble
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
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Recent Examples of louse up
Which is to say that America’s most prominent vaccine skeptic could have the power to upend, derail, or otherwise louse up a cornerstone of public health.
—
Daniel Engber, The Atlantic, 20 Nov. 2024
Conversely, one of the easiest ways to louse up a team on draft day is to load up a team with players who aren’t going to produce at a level commensurate with when they were drafted.
—Gary Davenport, The Athletic, 5 Aug. 2024
Daniel Engber, The Atlantic, 20 Nov. 2024
Conversely, one of the easiest ways to louse up a team on draft day is to load up a team with players who aren’t going to produce at a level commensurate with when they were drafted.
—Gary Davenport, The Athletic, 5 Aug. 2024
Recent Examples of Synonyms for louse up
Verb
-
Soon after Columbus stumbled across the Americas (in 1492), Cortés toppled the Aztec Empire (in 1521), and Pizarro did the same with the Inca one (in 1533).—
Big Think,
Big Think,
29 Oct. 2025
-
But Zoë’s first adaptation stumbles out of the gate — in large part because this show isn’t really her show.—
Ben Travers,
IndieWire,
29 Oct. 2025
Verb
-
He was sacked seven times and fumbled twice with both loose balls being recovered by the Bills’ defense.—
Mike Kaye,
Charlotte Observer,
27 Oct. 2025
-
But that same quarter, Kansas fumbled on a punt that K-State turned into a touchdown.—
Shreyas Laddha,
Kansas City Star,
26 Oct. 2025
Verb
-
In between all of that, a botched tripping call early in the second quarter took a huge pass play off the board for Miami, which would have gotten the Dolphins inside Baltimore’s 10-yard line.—
The Athletic NFL Staff,
New York Times,
31 Oct. 2025
-
McDaniel was blunt about his view of the tripping call against Ollie Gordon that negated a long completion to Jaylen Waddle.—
Barry Jackson,
Miami Herald,
31 Oct. 2025
Verb
-
The Giants, meanwhile, are coming off a painful defeat to the Denver Broncos, after blowing a 19-0 lead and losing 33-32 on a last-second Denver field goal after missing two PATs of their own, including one with 37 seconds left.—
Mike Jones,
New York Times,
26 Oct. 2025
-
After the final whistle blew at Memorial Stadium, Kiffin made some headlines for his postgame behavior toward an Oklahoma player.—
Matt Audilet,
MSNBC Newsweek,
26 Oct. 2025
Verb
-
There are plenty of teams that slip up against opponents like Minnesota (much like James Franklin and Penn State did against UCLA on Saturday), but that doesn’t happen for Day.—
Cameron Teague Robinson,
New York Times,
5 Oct. 2025
-
Even the pros slip up every now and then.—
Catherine Santino,
PEOPLE,
26 Sep. 2025
Verb
-
Managers can either screw up or screw up slightly less than the other guy.—
Grant Brisbee,
New York Times,
12 Oct. 2025
-
In a world of near-constant conference realignment and the transfer portal, the annual Red River Rivalry game at the State Fair of Texas is one of the few things the sport hasn’t screwed up.—
Jim Barnes,
Fort Worth Star-Telegram,
11 Oct. 2025
Verb
-
However, for some, gambling is an addiction that can ruin lives and families.—
Daniella Segura,
Miami Herald,
28 Oct. 2025
-
The Chiefs have seen some of league’s premier running backs — such as Saquon Barkley, Derrick Henry and Jahmyr Gibbs — and have met each challenge, preventing those elite players from ruining the defensive game plan.—
Emily Curiel,
Kansas City Star,
26 Oct. 2025
Verb
-
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
-
Year-long court battles have been waged over exactly how clean the water in the Everglades has to be without fouling up the whole system.—
Alex Harris
July 3,
Miami Herald,
3 July 2025
Cite this Entry
“Louse up.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/louse%20up. Accessed 1 Nov. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share