fastness, swiftness, speed - a rate (usually rapid) at which something happens; "the project advanced with gratifying speed"

precipitance, precipitancy, precipitateness, suddenness, abruptness - the quality of happening with headlong haste or without warning

movement, move, motion - the act of changing location from one place to another; "police controlled the motion of the crowd"; "the movement of people from the farms to the cities"; "his move put him directly in my path"

bolt, dash - the act of moving with great haste; "he made a dash for the door"

scamper, scurry, scramble - rushing about hastily in an undignified way

urgency - the state of being urgent; an earnest and insistent necessity