Source : Webster's Revised Unabridged Dictionary (1913)

Sprightliness \Spright"li*ness\, n.
   The quality or state of being sprightly; liveliness; life;
   briskness; vigor; activity; gayety; vivacity.

         In dreams, observe with what a sprightliness and
         alacrity does she [the soul] exert herself! --Addison.

Source : WordNet®

sprightliness
     n : animation and energy in action or expression; "it was a
         heavy play and the actors tried in vain to give life to
         it" [syn: {liveliness}, {life}, {spirit}]