gnarlytastic 

1. Great 2. Above All 3. unexplainably great

Grand Theft Auto Iv is gnarlytastic bro

gnarlytastic by Crizzle McGizzle May 13, 2008

gnartastic 

Gnarly mixed with fantastic..

Dude, that was gnartastic

gnartastic by Ethan the MC June 15, 2006

gnartastic 

a bail while skating, surfing, blading, biking etc. but while it is very gnarly it looks fantastic at the same time

"dude did you see Zack's gnartastic bail yesterday?"

gnartastic by The Zack Dahlia Murder February 11, 2010

gnarlymatic 

when something is ultra-mega coolioyoyo

dude, that is totally gnarlymatic... yea

gnarlymatic by Ishkabibble August 20, 2003