Xyth Share definition Flag Aka Xythey. Person who is exceptionally ass-kicking in NS, AA, Astrowars, and TS. Omgzorz! It's Xyth! Run for your friggin lives! Xyth by Jack March 16, 2004 0 0 Get merch Get the Xyth mug. Buy Now — $32.95 See more merch