Dictionary.com
Thesaurus.com
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.

Some of the wackiest ideas will never see the light of day, but the best might end up in one of our tech gift guides.

From The Wall Street Journal

Some of the wackiest ideas will never see the light of day, but the best might end up in one of our tech gift guides.

From The Wall Street Journal

The wacky and crazy stuff made great anecdotes, but it didn’t dominate the indexes any more than Strategy does now.

From MarketWatch

This latest creation is a dud, a banal sitcom figure surrounded by wacky characters who can’t wring any laughs out of Mr. Brooks’s musty script.

From The Wall Street Journal

Writer-director Noah Baumbach’s funniest and finest movie in many years is perfection all the way through: the perfect casting choice, the perfect balance of comedy and pathos, the perfect wacky route to the perfect ending.

From The Wall Street Journal