variants:
or less commonly whacky
wackier also whackier; wackiest also whackiest
Definition of wacky
: absurdly or amusingly eccentric or irrational : crazy
wacky ideas a wacky comedian
Keep scrolling for more
Keep scrolling for more
Keep scrolling for more
Test Your Vocabulary
Who Knew?
-
- What is a ruelle?

Test your visual vocabulary with our 10-question challenge!
TAKE THE QUIZ
Anagram puzzles meet word search.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Share wacky
Time Traveler for wacky
The first known use of wacky was circa 1935
See more words from the same year