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
It took many years, much hard work, wacky policy stances and plenty of missteps.
From The Wall Street Journal • Mar. 25, 2026
The wacky 1994 film where Robert De Niro grunts his way through playing the Monster?
From Salon • Mar. 8, 2026
Every wacky second, you’re well aware how perilously close it is to falling apart at the seams.
From Los Angeles Times • Mar. 4, 2026
Savant means that my math skills are far beyond normal, and acquired means I wasn’t born with this wacky ability.
From "The Miscalculations of Lightning Girl" by Stacy McAnulty
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.
