Synonyms of insouciant

1 Syllable
gay, buoyant
2 Syllables
airy, jaunty, thoughtless, sunny, breezy, heedless, listless, mopish
3 Syllables
hang-loose, outgiving, unworried, nonchalant, easygoing, relaxed, untroubled, lightsome, carefree, free-minded, lighthearted, careless
4 Syllables
unbothered, unexcited, unconcerned
5 Syllables
unimpressible, disimpassioned, happy-go-lucky