fleetness
/ˈfliːtnɪs/rapidity of movement. “fleetness of foot” type of: celerity, quickness, rapidity, rapidness, speediness.
noun [具体名词] 快速;无常
I strike with preternatural speed and my enemies are robbed of their fleetness. 我以不可思议的速度进行攻击,而我的敌人则被夺走的他们的速度。