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wacky - 3 dictionary results

wack⋅y

[wak-ee]
–adjective, wack⋅i⋅er, wack⋅i⋅est. Slang.
odd or irrational; crazy: They had some wacky plan for selling more books.
Also, whacky.


Origin:
1935–40; appar. whack (n., as in out of whack) + -y 1


wack⋅i⋅ly, adverb
wack⋅i⋅ness, noun
wack·y   (wāk'ē)   
adj.   wack·i·er also whack·i·er, wack·i·est also whack·i·est Slang
  1. Eccentric or irrational: a wacky person.
  2. Crazy; silly: a wacky outfit.

[Variant of whacky, probably from the phrase out of whack; see whack.]
wack'i·ly adv., wack'i·ness n.

wacky 
"crazy, eccentric," 1935, variant of whacky (n.) "fool," late 1800s British slang, probably ultimately from whack "a blow, stroke," from the notion of being whacked on the head one too many times. Wack "crazy person" is a 1938 back-formation; extended form wacko is recorded from 1977. Wack in slang sense of "worthless, stupid," is attested from late 1990s.
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