louse up

This page is about the slang term louse up

American English


to spoil something or make it fail

For example

  • 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.


This is typically used in American English but may be used in other varieties of English too.

Quick Quiz

If Meg louses up this sale, she

a. will get a promotion

b. will get a bonus

c. won't get a bonus

Slang of the Day

Contributor: Matt Errey