lighthearted

Từ điển WordNet v3.1 - WordNet Dictionary

adjective

carefree and happy and lighthearted (Freq. 1)
- was loved for her blithe spirit
- a merry blithesome nature
- her lighthearted nature
- trilling songs with a lightsome heart
• Syn:
blithe, blithesome, lightsome, light-hearted
• Similar to:
cheerful
• Derivationally related forms:
lightsomeness (for: lightsome), lightheartedness, blitheness (for: blithe)