LOUSE UP Synonyms: 80 Similar and Opposite Words

louse up

verb

Definition of louse up

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

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 Maybe one party simply wants out for no apparent reason Anything can louse up the deal. — Lew Sichelman, Miami Herald, 28 May 2026 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

Recent Examples of Synonyms for louse up

Verb

There was upset after upset, and a few teams were on the verge of stumbling as well.

— David Troy OutKick, FOXNews.com, 24 Oct. 2026
Next week will bring major risks for a stock market that's trying to find its footing as the AI trade continues to stumble, with several megacap earnings, a Federal Reserve meeting and a key inflation report in store.

— Sarah Min, CNBC, 23 Oct. 2026

Definition of stumble

Verb

On the first play of Rutgers' next drive, Surace was sacked at the Rutgers 8 and fumbled with Northwestern’s Jamaal Johnson recovering.

— ABC News, ABC News, 24 Oct. 2026
The Chiefs actually missed a 43-yard field goal that would have won the game in regulation — after Justin Houston forced Lamar Jackson to fumble — but won the game with a short kick in overtime.

— Sam McDowell, Kansas City Star, 23 Oct. 2026

Definition of fumble

Verb

Doing so tripped Sixers All-Star guard Tyrese Maxey, and the nearest official immediately whistled for an offensive foul, Towns’ second inside the first four minutes of the season opener.

— Kristian Winfield, New York Daily News, 22 Oct. 2026
Even after Ball tripped Adebayo and knocked him out of the Heat-Charlotte Hornets play-in tournament game early last season, Spoelstra said the Heat left that moment in the past when asked about the play prior to Wednesday’s season opener.

— Anthony Chiang, Miami Herald, 22 Oct. 2026

Definition of trip

Verb

These higher-than-usual high tides are supercharged by winds blowing onshore, pushing more seawater on land.

— Alex Harris, Miami Herald, 27 Oct. 2026
While Healey is expected to let a reduction in his fiscal buffer do most of the work on the basis that the Iran war has blown a hole in his accounts, tax increases are still likely.

— Ian King, CNBC, 27 Oct. 2026

Definition of blow

Verb

Miami did a relatively fine job in Weeks 2 and 3 against some of the most talented backs in Christian McCaffrey of the 49ers and Kenneth Walker of the Chiefs but slipped up the two games prior to the bye against the Vikings and Bengals.

— David Furones, Sun Sentinel, 22 Oct. 2026
The Iberians slipped up big time in their first match of the tournament, being shocked by Switzerland 1-0, bringing back ghosts of tournament failures past for Spanish fans.

— Patrick Sung Cuadrado, CNN Money, 14 July 2026

Definition of slip up

Verb

Then police closed that, too — at midafternoon Tuesday after a report of a suspicious package — fouling up traffic for New Yorkers even more.

— ABC News, ABC News, 23 Sep. 2026
In the end, though, neither an explosion nor a giant spill of fluid that could foul up waterways and the ocean occurred.

— Hannah Fry, Los Angeles Times, 27 May 2026

Definition of foul up

Verb

One accidental move could ruin the attempt, requiring a correction at best, and a possible restart at worst.

— Christopher McFadden, Interesting Engineering, 25 Oct. 2026
Others have used it to remove oily stains from their toddlers like crayon marks on carpet, and one reviewer says it’s saved many of their clothes from being ruined in a household with unavoidable messes from both kids and pets.

— Caley Sturgill, Southern Living, 25 Oct. 2026

Definition of ruin

Browse Nearby Words

louses up

louse up

lousily

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“Louse up.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/louse%20up. Accessed 28 Oct. 2026.

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Synonyms of louse up

verb

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