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[hwak-ee, wak-ee] /ˈʰwæk i, ˈwæk i/
adjective, whackier, whackiest.
Slang. wacky. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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British Dictionary definitions for whacky


adjective whackier, whackiest
(US, slang) a variant spelling of wacky
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
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Slang definitions & phrases for whacky



Worthless; stupid; ''wimpish'': You'll have to deal with some really wack people


  1. A crazy or eccentric person; nut, screwball, weirdo: Two wacks if I ever saw one/ a father who was so abrasive and married now to such a wack (1938+)
  2. A drink of liquor
  3. A blow or hit made at someone or something

Related Terms


whack off

verb phrase

To masturbate; jerk off

[1960s+; one of the many terms equating masturbation with banging, beating, or pounding]

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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