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

The huge animals knocked bodies to the cobblestones, and stumbling runners caused several pileups during the two-and-a-half-minute run from the pen to the bull ring where bullfighters will kill the bulls later in the day.

— ABC News, ABC News, 11 July 2026
The huge animals knocked down bodies to the cobblestones, and stumbling runners caused several pileups during the 2½-minute run from the pen to the bullring where bullfighters would kill the bulls later in the day.

— Los Angeles Times, Los Angeles Times, 11 July 2026

Definition of stumble

Verb

Eugene Levy‘s fumbling birds and the bees talks comprise some of the funniest moments of American Pie — and most of them were improvised.

— Gwen Ihnat, Entertainment Weekly, 9 July 2026
But in her concentration, Porsha fumbled her words, which made the Faithfuls, who were desperate for a crumb of evidence so early in the game, suspicious of her sincerity.

— Ile-Ife Okantah, Vulture, 29 June 2026

Definition of fumble

Verb

In March, Melissa Graybill, 52, watched her mother, who is 69, begin an arduous recovery journey after tripping while getting off a horse.

— Erica Sloan, Washington Post, 14 July 2026
Most drug development campaigns only discover whether candidates trip this sensor late in the game, forcing drug developers to go back to the drawing board.

— Brittany Trang, STAT, 14 July 2026

Definition of trip

Verb

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
But for taxpayers with a solid compliance history who slip up once, automatically applying relief—instead of reserving it for those who know to ask—is a welcome change.

— Kelly Phillips Erb, Forbes.com, 11 July 2026

Definition of slip up

Verb

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
An incorrect connection or approach can foul up a line, damage a plane or cause an accident.

— Tara Copp The Washington Post, Arkansas Online, 25 May 2026

Definition of foul up

Verb

However, for some, gambling is an addiction that can ruin lives and families.

— Don Sweeney, Sacbee.com, 15 July 2026
But Neill doesn’t lean into the crotchety loner stereotype that could have ruined the entire film, finding a core of relatable decency in this outsider that instead holds the whole effort together with an honest humanity reflected in his choices.

— Brian Tallerico, Vulture, 14 July 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 18 Jul. 2026.

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Synonyms of louse up

verb

Example Sentences

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