Source : Webster's Revised Unabridged Dictionary (1913)

Sportful \Sport"ful\, a.
   1. Full of sport; merry; frolicsome; full of jesting;
      indulging in mirth or play; playful; wanton; as, a
      sportful companion.

            Down he alights among the sportful herd. --Milton.

   2. Done in jest, or for mere play; sportive.

            They are no sportful productions of the soil.
                                                  --Bentley.
      -- {Sport"ful*ly}, adv. -- {Sport"ful*ness}, n.