wacky
Americanadjective
adjective
Other Word Forms
- wackily adverb
- wackiness noun
Etymology
Origin of wacky
First recorded in 1935–40; apparently whack (noun, as in out of whack ) + -y 1
Explanation
Something that's wacky is weird or nutty or silly. Your goofy uncle who wears a funny hat and does magic tricks at the dinner table is wacky. Use the adjective wacky when you're talking about someone with a ridiculous sense of humor. Clowns are, by definition, wacky, for example. Most people have at least one wacky relative, and some are lucky enough to have entire wacky families. Wacky comes from the nineteenth century British slang term whacky, which arose from whack, specifically the idea of getting whacked on the head so hard that it turns you wacky.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
That may sound too derivative for some, but Sokolov, known for his outlandish Russian-language action-comedies “Why Don’t You Just Die!” and “No Looking Back,” brings a truly wacky sensibility to his first English-language feature.
From Los Angeles Times • Mar. 26, 2026
Those sentiments echoed the words of previous stars of “The Bachelorette,” a spin-off of the network’s “The Bachelor” franchise centered on rose-colored romance, wacky contests, fantasy suites, exotic locations and over-the-top drama.
From Los Angeles Times • Mar. 24, 2026
"But if it worked out that would be great, because I trust Zach, and he's got a lot of wacky ideas."
From BBC • Mar. 16, 2026
The wacky 1994 film where Robert De Niro grunts his way through playing the Monster?
From Salon • Mar. 8, 2026
Those wacky Germans— they've got a word for everything.
From "An Abundance of Katherines" by John Green
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
