screw up
verb
screwed up; screwing up; screws up
Definition of screw up (Entry 2 of 2)
1
: to tighten, fasten, or lock by or as if by a screw
: to botch an activity or undertaking
Test Your Vocabulary
Odd Habits and Quirks
-
- Which of the following best describes an easily irritated person?

Test your knowledge - and maybe learn something along the way.
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share screwup
Time Traveler for screwup
The first known use of screwup was in 1625
See more words from the same year