Niggy Share definition Flag Adj. When someone is acting in a way which would be seen as beneath educated and sophisticated members of society. Acting ghetto. The homeless man got niggy on me when I told him "change would be you getting a job or a bath" Niggy by 4PatriotSolutions March 15, 2018 0 0 Get merch Get the Niggy mug. Buy Now — $32.95 See more merch