Synonyms of unconcerned

1 Syllable

numb, stoic, blind, cold, blasé, cool, deaf

2 Syllables

stony, certain, blase, thoughtless, heedless, easy, discinct, aloof, lazy, distant, laziest, blithe, neutral, languid, lazier, unthought, stoical, feckless, withdrawn, snoozy, callous, offhand

3 Syllables

lukewarm, reserved, hard-hearted, unmoved, unstirred, unworried, coldhearted, serene, unhearing, hardboiled, unthoughtful, hot-headed, haphazard, unpitying, complacent, free-minded, insouciant, negligent, unsocial, incurious, uncurious, questionless, nonchalant, asocial, supine, bystanding, detached, feelingless, untouched, languorous, uncaring, sleepyhead, phlegmatic, unready, hardened, hang-loose, outgiving, amnesic, forgetful, lymphatic, slow-moving, easygoing, relaxed, oblivious, unruffled, untroubled, spiritless, careless

4 Syllables

perfunctory, unflustered, unexcited, unsurprised, aversive, self-centered, disentranced, apathetic, devil-may-care, unperturbed, impassive, non-combatant, uninvolved, middle-of-road, unimpressed, unbothered, unaroused, unpassioned, insociable, inadvertent, noncombatant, case-hardened, energyless, unindustrious, insensible, unaware, indifferent, nonaligned, impassible

5 Syllables

uninterested, unimpressible, unsympathetic, insensitive, casehardened, happy-go-lucky, inattentive, lackadaisical, inexcitable, unrecognizing, nonbelligerent, insusceptible, irreflective, disinterested, unenergetic, dispassionate, disimpassioned, pococurante

6 Syllables

uncompassionate, nonparticipating