wacky

[ wak-ee ]
/ ˈwæk i /

adjective, wack·i·er, wack·i·est. Slang.

odd or irrational; crazy: They had some wacky plan for selling more books.

QUIZZES

Fend Off Sciolism With This Word Of The Day Quiz
Are you the Cinderella of this week’s quiz? Test your memory on the words and definitions from March 23–29.
Question 1 of 7
schlep
Also whacky.

Origin of wacky

1935–40; apparently whack (noun, as in out of whack) + -y1

OTHER WORDS FROM wacky

wack·i·ly, adverbwack·i·ness, noun

Words nearby wacky

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for wacky

British Dictionary definitions for wacky

wacky
/ (ˈwækɪ) /

adjective wackier or wackiest

slang eccentric, erratic, or unpredictable

Derived forms of wacky

wackily, adverbwackiness, noun

Word Origin for wacky

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)
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