Definition of goof
(Entry 1 of 2)
1
: a silly or stupid person
2
: blunder
goof
verb
goofed; goofing; goofs
Definition of goof (Entry 2 of 2)
1a
: to spend time idly or foolishly
—usually used with off goofing off instead of working
b
: to engage in playful activity
—usually used with around goofing around after school
2
: to make a usually foolish or careless mistake : blunder
—often used with up
: to make a mess of : bungle
—usually used with up goofed up the assignment
Test Your Vocabulary
Which Word Does Not Belong?
-
- Which of these words does not mean "nonsense"?

Test your visual vocabulary with our 10-question challenge!
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share goof
Time Traveler for goof
The first known use of goof was in 1915
See more words from the same year