Synonyms and related words :
Laodicean, Olympian, aloof, apathetic, ataractic, benumbed, blah, blase, bored, careless, casual, collected, comatose, composed, cool, degage, desensitized, detached, devil-may-care, disinterested, dispassionate, disregardful, distant, dull, easy, easygoing, free and easy, heartless, hebetudinous, heedless, hopeless, impassive, in a stupor, inattentive, incurious, indifferent, inexcitable, insouciant, lackadaisical, languid, lethargic, listless, mindless, negligent, nonchalant, numb, numbed, offhand, passive, perfunctory, phlegmatic, pluckless, pococurante, reckless, regardless, remote, resigned, slack, sluggish, soporific, spiritless, spunkless, stoic, stolid, stupefied, supine, torpid, turned-off, unanxious, uncaring, undiscriminating, uninquiring, uninterested, uninvolved, unmindful, unsolicitous, withdrawn