1
as in stumbles
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 fumbles
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 louses up
Verb
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In it, the man stumbles around, blinded by the sun, surrounded by insensible tourists.
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The conversation stumbles on for a few moments, but Crook can’t find the words.
Verb
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Tensions between the galley and the interior continue to escalate over lunch service, when a radio mishap fumbles the order in which the food should go out.
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The movie fumbles the chance to do something arresting with this seminal period in art.
Verb
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Early on in the clip, Jake Johnson’s former tennis star Dusty Boyd trips over the net and injures his wrist in a bad way.
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Longer trips sail to Costa Maya and Cozumel, Mexico.
Verb
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On his best nights, when the velocity and command combine, Sasaki blows past batters with a triple-digit fastball and cutting off-speed pitches.
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And now, these Sixers are a team that can seemingly stand in the middle of the ring and trade blows with anyone in the Eastern Conference.
Verb
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At Baku, however, the car looks to be a podium contender, potentially fighting for the win if McLaren slips up.
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Along the way Texas needs to hope Seattle slips up, or else that final weekend in Cleveland could wind up being meaningless.
Verb
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But their relationship remains undefined, and kind of over after Carter drunkenly ruins Beulah's big party.
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The out-and-back Sand Canyon Trail (6 miles each way) passes a series of ancestral Puebloan ruins.
Verb
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And then Ron somehow blunders his way into getting the number jacked up to $100,000 in return for their silence.
Verb
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Dominic Zvada boots a 31-yard field goal to give the Wolverines the lead.
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Cite this Entry
“Louses up.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/louses%20up. Accessed 6 Jul. 2026.
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