either really good or really bad. Snowboarding Lingo. Lame to use if you are really serious but hilarious to joke with. Aka: gnar, gnarbuckets
Bad - Dudeman, that line looks pretty gnarly

Good - Gnarly Trick Dog
by Stevie-G January 08, 2004
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Something that is twisted and deformed. That is extreamly out of charactor, to be extreamly non-conforming. Often used among skaters or surfers. can be good or bad
Dude bam margera is the gnarliest mother fucker alive! He is soooooo cool doing all that jackass shit! Man he has balls! He's soooooo fucking hott id tap that twice! That's why I named my dog after him dude my dog is gnarly as shit eating his own shit man that takes balls! He is wicked retarted!
by gretchen hardcock September 05, 2008
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Gnarly is a world that often decribes a person who is just all over amazing.
There names often are Jackson.
Like Jackson Glasgow for instance (an awesome artist and skateboarder)
"Jackson is so effin' gnarly!"
by summerraine April 15, 2010
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Gnarly is basically anything out of the ordinary, but usually in a good way. Like a wave that is huge is a gnarly wave, but a wave that is too small would never be a gnarly wave. Some unique and different sounding music can be gnarly, but boring soft R&B can't be gnarly.

Wow dude those are some <a href="www.gnarle.com">gnarly shirts</a>!
by Doctor Levels March 23, 2009
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Gross, painful, twisted, and tweaked. Like pulling seven hairs out of your nose at once.
"Dude, I just pulled seven hairs out of my nose at once. It was pretty gnarly."
by FiveShiftOne June 12, 2018
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