nas·ti·est, noun, plural nas·ties.
physically filthy; disgustingly unclean: a nasty pigsty of a room.
to taste or smell; nauseating.
; objectionable: a nasty habit.
vicious, spiteful, or ugly: a nasty dog; a nasty rumor.
bad or hard to deal with, encounter, undergo, etc.; dangerous; serious: a nasty cut; a nasty accident
This is what Niki is..