Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

louse up

verb

Definition of louse up 

transitive verb

: foul up, snarl

intransitive verb

: to make a mess

Synonyms Example Sentences Learn More about louse up

Keep scrolling for more

Examples of louse up in a Sentence

everything is riding on this project, so we can't afford to louse up I loused up the wallpapering job in the bedroom—the seams show too much.

First Known Use of louse up

1934, in the meaning defined at transitive sense

Keep scrolling for more

Learn More about louse up

Dictionary Entries near louse up

louro

louse

louseberry

louse up

lousewort

louster

lousy

Statistics for louse up

Look-up Popularity

Time Traveler for louse up

The first known use of louse up was in 1934

See more words from the same year

More from Merriam-Webster on louse up

Rhyming Dictionary: Words that rhyme with louse up

Thesaurus: All synonyms and antonyms for louse up

Comments on louse up

What made you want to look up louse up? Please tell us where you read or heard it (including the quote, if possible).

Show Comments  Hide Comments 

WORD OF THE DAY

immure

to enclose within walls

Get Word of the Day daily email!

Test Your Vocabulary

Late Autumn 2018 Words of the Day Quiz

  • frosted-autumn-leaves
  • Which is a synonym of yahoo?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words at Play

Ask the Editors

Word Games