Namdago Share definition Flag Def: Stupid, idiot, asshole. Something pityful.When you wanna insult somebody, use this word. Example: 찐자 남다고 (You such a namdago) Namdago by yumyoonmin July 9, 2017 0 0 Get merch Get the Namdago mug. Buy Now — $32.95 See more merch