Synonyms of light-hearted

1 Syllable
light, gay
2 Syllables
blithe, cheerful, merry, jaunty, sprightly, flippant, happy, bouncy, cheery
3 Syllables
fanciful, nonchalant, graceful, whimsical, resilient, elastic
4 Syllables
volatile, frolicsome, high-spirited, effervescent, animated