SLAYYED Share definition Flag Means to defeat, dominate, win something. Also means to kill something/someone. A word used by the mainly the Britney Army, and other fanbases. Greg S : OMG SHE LOOKS FABU SLAYYEDAlice: Slayed*Greg S : STFU SLAYYED by The Original Doll January 25, 2014 Get the SLAYYED mug.