wacky

Also whack·y

[wak-ee]

adjective

Slang.

wackier, wackiest 

1. odd or irrational; crazy.

   They had some wacky plan for selling more books.

wacky

/ ˈwækɪ /

adjective

1. slang,  eccentric, erratic, or unpredictable

Other Word Forms

• wackily adverb
• wackiness noun

Word History and Origins

Origin of wacky¹

First recorded in 1935–40; apparently whack (noun, as in out of whack ) + -y ¹

Word History and Origins

Origin of wacky¹

C19 (in dialect sense: a fool, an eccentric): from _whack (hence, a whacky, a person who behaves as if he had been whacked on the head)

Example Sentences

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.

Read more on The Wall Street Journal

There’s a lot of wacky odd-couple chemistry in their interactions; she was programmed to have, or at least imitate, human emotional intelligence, while he is more given to broad statements about being a fierce loner.

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Freddie Freeman slammed a walk-off homer to lead off the bottom of the 18th, putting the finishing touch on one of the weirdest, wackiest, most mind-numbing contests ever staged in the Fall Classic.

Read more on The Wall Street Journal

The lunar lighting along with the glow of Masli’s wacky concern enhanced the lyricism of a show whose effect would probably be more concentrated in a more intimate venue.

Read more on Los Angeles Times

And when did this wholesome yet wacky activity start?

Read more on Salon

Related Words

• absurd 
• crazy 
• eccentric 
• foolish 
• loony 
• nutty 
• odd 
• silly 
• unpredictable 
• whacky 
• zany