The Collaborative International Dictionary of English v.0.48:

Sportful \Sport"ful\ (-f[.u]l), a.
   1. Full of sport; merry; frolicsome; full of jesting;
      indulging in mirth or play; playful; wanton; as, a
      sportful companion.
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            Down he alights among the sportful herd. --Milton.
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   2. Done in jest, or for mere play; sportive.
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            They are no sportful productions of the soil.
                                                  --Bentley.
      [1913 Webster] -- Sport"ful*ly, adv. --
      Sport"ful*ness, n.
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