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1.
Adj.-The blackest person in the area.
Damn did you see Takwanda's cousin? He was the niggest person in the room.
by WrathTheStampede March 30, 2011
 
2.
adj. - being the most gangster, or hood
"yo, dat boi kyle, is the niggest!"
by Zachary Bean February 18, 2010
 
3.
being a fan and finally meeting the black person you idolise and it becomes the biggest moment of your life.
man, you'll never guess who I met last week, yeah, Kanye West. It was the niggest moment of my life
by arminvanfan July 12, 2010