yoonsung Share definition Flag A person who’s just too cool and sexy to be around lame ass motherfuckers. A rare Korean name that usually has great Korean fortune called “Saju” OMG, Yoonsung is so fuckin cool. yoonsung by Homiedeul November 22, 2021 0 0 Get merch Get the yoonsung mug. Buy Now — $32.95 See more merch