Suffix added to adjectives and participles to intensify their meaning. By extention, these wordsmay used as abstract nouns.
Party Grrl One: That stupid drunk-ass just fell into the pool!
Party Grrl Two: Hey, check out that nasty-ass drunk streaking down the street like a dumbass!
Party Grrl One: Cool! That gives me a chance to talk to his fineass brother.
-ass is a term to be added on to the end of a noun to turn it into an adjective. Is used primarily when the word the adjective applies to or the adjective itself is profane.
Bitch-ass motherfucker=motherfucker who is claimed to act in a manner resembling one's perception of a "bitch"
An augmentative suffix that can be added to short adjectives, generally of Germanic origin, usually requiring hyphenation, to form a stronger adjective.