NSNS Share definition Flag An acronym for 'neither straight nor single', often used among groups of teenage girls watching groups of teenage boys. Pronounced 'nuss-nuss', and can be used as an adjective. "That one's very fit. Pity he's a NSNS" "He's nussy." NSNS by Redwaluc September 16, 2008 0 0 Get merch Get the NSNS mug. Buy Now — $32.95 See more merch
