How To Use Fleetness In A Sentence

Thoas rules [8] the land, o'er barbarians, [Thoas,] who guiding his foot swift as the pinion, has arrived at this epithet [of Thoas, i.e. _the swift_] on account of his fleetness of foot. The Tragedies of Euripides, Volume I.
The ornithopods, for example, depended on fleetness of foot and acute sight and hearing.
fleetness of foot
Thinking of his declining family, he heaves a deep sigh over the fleetness of fate.
It was natural, of course, that he should be called a bloodhound; and it did not occur to any one in Regina that his height, his fleetness, and his shaggy black and iron-gray coat were anything but typical of the bloodhound. Jan A Dog and a Romance

Down through the ages education, religion, environment, and other special influences have no doubt played a small part in influencing and determining hereditary characteristics; just as environment in the ages past changed the foot of the evolving horse from a flat, "cushiony" foot with many toes (much needed in the soft bog of his earlier existence) into the "hoof foot" of later days, when harder soil and necessity for greater fleetness, assisted by some sort of "selection" and "survival," conspired to give us the foot of our modern horse, and this story is all plainly and serially told in the fossil and other remains found in our own hemisphere. The Mother and Her Child
Over head nothing was to be seen but huge travelling clouds, called by sailors the "scud," which hurried onwards with the fleetness of the eagle in her flight. The Mirror of Literature, Amusement, and Instruction Volume 10, No. 275, September 29, 1827