1 definition by DubstepLyrics
A slang term for "nasty". When one tries to enunciate "nasty" with a lame accent it may be mistaken for "nehsty" which has been changed to "neesty" to avoid any change in enunciation no matter what accent one may have; One who is "nasty" at something, metaphorically speaking.
by DubstepLyrics September 21, 2011