lighthearted
1. [ adjective ] carefree and happy and lighthearted
Synonyms: blithe lightsome blithesome
Examples:

"was loved for her blithe spirit" "a merry blithesome nature" "her lighthearted nature" "trilling songs with a lightsome heart"

Related terms: cheerful
Similar spelling:   light-heartedly
  light-haired
  light_year
  light-armed
  light_air
  lighterage