Source : Webster's Revised Unabridged Dictionary (1913)

Quickness \Quick"ness\, n.
   1. The condition or quality of being quick or living; life.
      [Obs.]

            Touch it with thy celestial quickness. --Herbert.

   2. Activity; briskness; especially, rapidity of motion;
      speed; celerity; as, quickness of wit.

            This deed . . . must send thee hence With fiery
            quickness.                            --Shak.

            His mind had, indeed, great quickness and vigor. --
                                                  Macaulay.

   3. Acuteness of perception; keen sensibility.

            Would not quickness of sensation be an inconvenience
            to an animal that must lie still ?    --Locke

   4. Sharpness; pungency of taste. --Mortimer.

   Syn: Velocity; celerity; rapidity; speed; haste; expedition;
        promptness; dispatch; swiftness; nimbleness; fleetness;
        agility; briskness; liveliness; readiness; sagacity;
        shrewdness; shrewdness; sharpness; keenness.

Source : WordNet®

quickness
     n 1: skillful performance or ability without difficulty; "his
          quick adeptness was a product of good design"; "he was
          famous for his facility as an archer" [syn: {adeptness},
           {adroitness}, {deftness}, {facility}]
     2: intelligence as revealed by an ability to give correct
        responses without delay [syn: {mental quickness}, {quick-wittedness}]
     3: a rate that is rapid [syn: {celerity}, {rapidity}]