Source : Webster's Revised Unabridged Dictionary (1913)

High-spirited \High"-spir`it*ed\, a.
   Full of spirit or natural fire; haughty; courageous;
   impetuous; not brooking restraint or opposition.

Source : WordNet®

high-spirited
     adj : joyously unrestrained [syn: {ebullient}, {exuberant}]