Synonyms and related words :
airy, aloof, anyhow, anyway, anywise, apathetic, at all, at all costs, at all events, at any cost, at any rate, ataractic, behindhand, blase, bored, by any means, careless, casual, cursory, degage, delinquent, derelict, despite, detached, devil-may-care, disinterested, dispassionate, disregardant, disregardful, distant, distracted, distrait, easygoing, even with, flippant, forgetful, free and easy, heedless, however, impassive, in any case, in any event, in any way, in despite of, in spite of, inadvertent, inattentive, inconsiderate, incurious, indifferent, inexcitable, inobservant, insouciant, irregardless, irrespective of, lackadaisical, lax, lazy, listless, mindless, neglectful, negligent, nevertheless, no matter what, nohow, nonchalant, nonetheless, notwithstanding, oblivious, offhand, perfunctory, phlegmatic, pococurante, reckless, regardless of, regardless of cost, remiss, respectless, slack, spite of, stolid, tactless, thoughtless, turned-off, unanxious, unconcerned, undiplomatic, undiscriminating, unheedful, unheeding, uninquiring, uninterested, uninvolved, unmarking, unmindful, unnoticing, unnoting, unobservant, unobserving, unprepared, unready, unremarking, unsolicitous, untactful, unthinking, with, withdrawn