This page is about the slang term louse up
Meaning: to spoil something or make it fail
- She really wants this job, so I hope she doesn't louse up the interview.
- Don't worry. He won't louse it up. He's been doing these deals for years.
Variety: This is typically used in American English but may be used in other varieties of English too.
If Meg louses up this sale, she
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Contributor: Matt Errey