Of poor quality; uncool. Early hip hop term, from "Rapper's Delight" by the Sugarhill Gang.
"I got bodyguards, I got two big cars
that definitely aint the wack"
by Black-Velvet November 18, 2008
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something that really sucks.

also a quote from a vine where a black man just yells
his hair? WACK
his gear? WACK
his jewelry? WACK
his foot stance? WACK
the way he talks? WACK
the way he doesn’t even like to smile? WACK
me? I ‘ M T I G H T A S F U C K
by olivaègay November 28, 2018
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Perplexingly unsavory; “off”; unusual/weird in a bad or uncomfortable way; confusing and unsettling; hard to understand (and often not worth the effort to try to understand)
Yeah, that math teacher was bad, but the school just fired him out of the blue!
That’s wack, dude.
by IstanbulKedi June 15, 2019
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an adjective used to refer to something crazy, weird, and/or unbelievable
Amir: Yo, did you see mr. brown break dancing in his cow costume?
Zach: Yeah, that was wack bro
by ur b1tch November 22, 2019
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Something that just plain sucks, or isn't cool at all. Lame.
by Ben November 22, 2003
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1. messed up
2. to be killed by the mafia in a hit
1. That kid is so wacked
2. I heard Mario got wacked last night while he was in his house.
by Jerry September 09, 2003
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1. To be of low or dubious quality. Origin: comes from 'whacky', which evolved to 'whacked' or 'whacked out'. Eventually shortened to 'wack'. The 'h' is usually dropped to differentiate the meaning from 'whack', which is to hit something hard or, kill (old wise guy terminology).
Yo, my dog, those shoes are wack.
by Paul October 13, 2004
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