lightsome in WordNet English dictionary

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"
   blithe  blithesome  lighthearted  lightsome  light-hearted 
   
2. moving easily and quickly; nimble
   "the dancer was light and graceful"; "a lightsome buoyant step"; "walked with a light tripping step"
   light  lightsome  tripping