- very bad: All drugs are bad, but crack is wack.
- extreme; far-out.
Origin of wack1
First recorded in 1935–40; perhaps back formation from wacky
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for wack
And he can go from talking to his Wack Pack to talking to Julia Roberts.Andy Cohen Reveals His ‘Watch What Happens Live’ Dream Guests
July 16, 2014
Thankfully, the “mother of the Wack Packers” lived up to her reputation.My Night at ‘America’s Got Talent’ With Mariann From Brooklyn
July 31, 2013
One of his most famous was the New York billboard he painted with the slogan “Crack is Wack.”Keith Haring’s Public, Political Art at Paris’s Musée D’Art Moderne
April 19, 2013
I throw out the dirt: (M) wapattikosch; (R) wacktóhsch (wack short).
We made our way to the store of Wack Stillman, a favourite rendezvous for the loafers and off-works.Adventures in Many Lands
- Liverpool and Midland English dialect friend; pal: used chiefly as a term of address
perhaps from dialect wack or whack to share out, hence one who shares, a friend
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
Word Origin and History for wack
"crazy person," 1938, back-formation from wacky. Adjective in slang sense of "worthless, stupid," is attested from late 1990s.
Online Etymology Dictionary, © 2010 Douglas Harper