Abbreviation of 'Super Mega Awesome'. To be used only in situations of extreme levels of awesomeness. Considered level 3 on the awesome scale. See Mawesome, Pawesome, Fawesome for other levels.
A mixture of Nice (or gnarly or any "cool" word with an "n" sound for that matter) and, obviously, Awesome.
Etymology: Invented by Drew Nutter, this word was originally spelt "Nawesome." Drew then decided that just one letter wasnt enough to do justice to the other word (nice, gnarly, or whatever you like) so he added a "G" as in "gnarly" to make it Gnawesome. Soon after, he decided a "K" was a more attractive letter to use, so he made it "Knawesome."
(used only in party-purpose and works best in swedish)
when the party is far above expectations and you can't really explain how good the evening / night was