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Someone or something of such disgusting quality that you want to vomit, or else scream Gnarlack Attack!, because it is just so horrible. Can apply to people, things, parts of people, or parts of the parts of people, or...anything else that's totally nar-nar.
Me-- Dude, look at that chick! She's totally gnarlack!

Jesse-- I know! Makes me want to chop my members off!
gnarlack by Gnarlack Attack!!! June 11, 2006
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gnarlacious

1. See gnarly
2. Even more gnarly than gnarly
2. Dude I went up my block, and I just saw the most gnarlacious bike. I just had to steal it.
gnarlacious by MC BROWNAY March 10, 2008
Related Words

gnarlickle 

a mix of radical gnarly and cool
"duuuuudeeeee that slide was gnarlickle
gnarlickle by DIavarium June 24, 2023