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.
Having It Both Ways What a wacky deadline for the Tampa Bay Rays. Tony Blengino, Forbes.com, 1 Aug. 2025 In it, Neeson is Frank Drebin Jr., the grizzled cop son of original star Frank Drebin (the incomparable late Leslie Nielsen), who also happens to be seemingly genetically predisposed to wacky happenstance in his day-to-day life. Kate Erbland, IndieWire, 1 Aug. 2025 Unforeseen plot twists in your career could unnerve you when wacky Uranus in Gemini throws the sun off its game on August 24. Liz Simmons, StyleCaster, 28 July 2025 Andrew Van Ginkel, LB, Vikings There isn’t a player who embodies defensive coordinator Brian Flores’ wacky system more than Van Ginkel. Ted Nguyen, New York Times, 23 July 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 5 Aug. 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!