Source : Webster's Revised Unabridged Dictionary (1913)

Frisky \Frisk"y\, a.
   Inclined to frisk; frolicsome; gay.

         He is too frisky for an old man.         --Jeffrey.

Source : WordNet®

frisky
     adj : playful like a lively kitten [syn: {kittenish}]
     [also: {friskiest}, {friskier}]