Top Definition
1. Tastes bad

2. Same usage as "ill" for tricks or stunts - higher degree
1. After eating ramen enough, you begin to realize that vegetables bust the ill nasty in the worst kind of way

2. Yo, that triple back-flip half-axle double grind was the ill nasty!
by Brett Staebell May 23, 2003
1 more definition
so ill, so GLORIOUS, so hot words cannot describe.
boy: yo look at the sexy ladyz
boy2: sexy aint the word, them ladyz are ILLNASTY!
by juicey_____MA March 22, 2005

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