Something that is so disgusting that nasty is not a powerful enough adjective to use for describing that thing
Did you hear about that man who killed his pregnant wife and ate the fetus? That is super nersty!
by Chandyman March 01, 2011
Another word for nasty, but of a heightened nastiness. Old cheese is nasty. Old cheese with diarrhea on it is nersty. Often pronounced with a long "r" as in nerrrsty.
That movie was sick! But the part where his grandma vomited on the dog was nersty!
by kristin p. August 29, 2005