Synonyms of nonchalant

1 Syllable

light, cold, blasé, smooth, cool, calm

2 Syllables

airy, trifling, slapdash, easy, discinct, aloof, placid, happy, mellow, loose, neutral, stoical, casual, listless, offhand

3 Syllables

lukewarm, unworried, serene, neglectful, unhurried, free-minded, insouciant, negligent, unsocial, incurious, debonair, bystanding, composed, light-hearted, detached, uncaring, unfeeling, hang-loose, outgiving, easygoing, relaxed, unruffled, untroubled, collected, effortless, unfazed, careless

4 Syllables

unexcited, unsurprised, apathetic, devil-may-care, unconcerned, unperturbed, impassive, non-combatant, uninvolved, middle-of-road, unimpressed, unbothered, unaroused, noncombatant, unflappable, indifferent, nonaligned

5 Syllables

unemotional, unimpressible, happy-go-lucky, lackadaisical, inexcitable, nonbelligerent, disinterested, disimpassioned, dispassionate, imperturbable, unperturbable, pococurante

6 Syllables

nonparticipating