Top Definition
Can mean pretty much anything depending on the contex it's used in.
"oh man I totally gnarthed that test today."

"OMG Sheena look at that skirt, it's so gnarth."

"Yay, it's too gnarth for me."
by cammac April 10, 2008
a gnarly marth player
ha damn... looks like your up against Gnarth bro.
by GN4R April 30, 2008

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