Synonyms of unworried

1 Syllable
gay, buoyant
2 Syllables
airy, jaunty, thoughtless, sunny, breezy, heedless
3 Syllables
unflurried, nonchalant, untroubled, unfazed, unvexed, carefree, insouciant, lighthearted, careless
4 Syllables
unbothered, unperturbed, unflustered, unsurprised, unconcerned
5 Syllables
happy-go-lucky