look up any word, like pussy:
 
1.
(adj.) a ghetto combination of the words "sick" and "nasty" used to describe a person or persons as both sick and nasty. (may also be used to describe animals)

plural form: sicnasteez
verb form: sicnasting-the act of being sicnastee
Jessica: Omg, look at Brittany's outfit!
Madison: She is sooo sicnastee.

Madison: Are Landon and Farrah back together?
Jessica: Yeah, they're a real sicnastee couple.
by LadyScarz January 27, 2011