light-hearted

from WordNet (r) 3.0 (2006)

light-hearted
    adj 1: carefree and happy and lighthearted; "was loved for her
           blithe spirit"; "a merry blithesome nature"; "her
           lighthearted nature"; "trilling songs with a lightsome
           heart" [syn: {blithe}, {blithesome}, {lighthearted},
           {lightsome}, {light-hearted}]

from The Collaborative International Dictionary of English v.0.48

Light-hearted \Light"-heart`ed\ (l[imac]t"h[aum]rt`[e^]d), a.
   Free from grief or anxiety; gay; cheerful; merry. --
   {Light"-heart`ed*ly}, adv. -- {Light"-heart`ed*ness}, n.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

36 Moby Thesaurus words for "lighthearted":
      airy, blithe, blithesome, breezy, buoyant, carefree, corky,
      debonair, effervescent, expansive, festive, free, free and easy,
      gay, glad, gleeful, happy, high-spirited, insouciant, jaunty,
      jocund, jolly, jovial, joyful, joyous, light, lightsome, lively,
      minded, mirthful, perky, resilient, spirited, sprightly, vivacious,
      volatile

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