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Synonyms

wacky

American  
[wak-ee] / ˈwæk i /
Also whacky

adjective

Slang.
wackier, wackiest

  1. odd or irrational; crazy.

    They had some wacky plan for selling more books.
wacky British  
/ ˈwækɪ /

adjective

  1. slang eccentric, erratic, or unpredictable

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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

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.

Does the world need all these wacky ETFs?

From The Wall Street Journal

Like many wild and wacky ideas, it all started down at the pub.

From BBC

Invariably these wacky scenarios will be more amusing to longtime fans, for whom a frantic climax akin to the lightning-meets-DeLorean ending of “Back to the Future” will play like nostalgia for nostalgia.

From Los Angeles Times

The heart of the movie is a wacky and improbable scheme by Maria Ángeles to hit the reset button and get her life back.

From The Wall Street Journal

One paged titled "the most ridiculous things" is filled with plenty of wacky ideas to inspire creatives.

From BBC

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.