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1.
So Gnar is the defining of.

A act of courage, death, stupidity, pure awesomeness anything that is awesome.
Pat dropped a 100 foot cliff and lived
Monster said to PAT : that was So Gnar dude.
by airblastor May 05, 2009
 
2.
freakin crazyness.. mad fun.. simply put: so gnarly
that backflip was sognar ma man...
by psizzle September 26, 2006
 
3.
when a dog shakes dry after swimming. used by surfers at the beach. the shaking and/or the resulting spray is called sognar. can be used as a verb or noun.
verb:

"watch out dude, that dog is about to sognar!" or "chad toweled off but then steve's fucking dog sognarred him"

noun:

"that stupid dog got sognar all over me"
by ShredBoy October 26, 2011