Found 2 items, similar to fleetness.
English → English (WordNet) Definition: fleetness fleetness n : rapidity of movement; “fleetness of foot”
English → English (gcide) Definition: Fleetness Fleetness \Fleet"ness\, n. Swiftness; rapidity; velocity; celerity; speed; as, the fleetness of a horse or of time. [1913 Webster]