NIGGGAAARRR! Share definition Flag 1. To display a feeling of aggression or anger. 2. A profane adjective for an African American. Gaberiel screamed "NIGGGAAARRR!" when his father asked him to do a chore when he did not want to. NIGGGAAARRR! by vanillaface169 December 24, 2010 0 0 Get merch Get the NIGGGAAARRR! mug. Buy Now — $32.95 See more merch