variants or less commonly whacky
wackier also whackier; wackiest also whackiest
: absurdly or amusingly eccentric or irrational
wacky ideas
a wacky comedian
wackily adverb
wackiness noun

Examples of wacky in a Sentence

My wacky aunt takes a swim before the lake freezes every winter. the wacky world of his imagination
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Indeed, Probst promises the RizGod is not just a wacky character, but an actual gamer. Dalton Ross, Entertainment Weekly, 23 Sep. 2025 This show is a wild, wacky balm, so zero antacids. Maggie Fremont, Vulture, 19 Sep. 2025 That all sounds like the workaday stuff of romantic drama, but A Big Bold Beautiful Journey—its script is by Seth Reiss, who co-wrote the 2022 foodie satire The Menu—takes some wacky swings, all presented with a deadpan flourish. Stephanie Zacharek, Time, 19 Sep. 2025 After a wacky fourth quarter, Denver suffered its first loss of the 2025 season to the Indianapolis Colts, in a game the Broncos quite literally had won. Luca Evans, Denver Post, 15 Sep. 2025 See All Example Sentences for wacky

Word History

Etymology

perhaps from English dialect whacky fool

First Known Use

1930, in the meaning defined above

Time Traveler
The first known use of wacky was in 1930

Browse Nearby Words

Cite this Entry

“Wacky.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/wacky. Accessed 26 Sep. 2025.

Kids Definition

wacky

adjective
wackier; wackiest
: amusing and very strange
wackily
ˈwak-ə-lē
adverb
wackiness
ˈwak-ē-nəs
noun

More from Merriam-Webster on wacky

Last Updated: - Updated example sentences
Love words? Need even more definitions?

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