The noun form of nasty, generally used to designate something unidentifiable that is nasty.
That festering bucket over there is full of nast.
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short for nasty, because that of course is a mouth full. In other words: gross, disgusting, or replusive.
She won't out with you. She says your nast.
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Noun form of the word "nasty". A word used to describe any unidentified substance or aggregate of matter, which doesn't necessarily have to be particularly nasty.
Patron: "Waiter, can we have some more of that tasty green nast?"
Waiter: "Do you mean the Tomatillo Salsa?"
Patron: "That's the stuff!"
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"Dude, that's naste as hell!"
"You are so naste!"
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