SYNONYMS
careless, lazy, lax, unenthusiastic, half-hearted, uninterested, lukewarm, indifferent, uncaring, unconcerned, casual, offhand, blasé, insouciant, leisurely, relaxed
apathetic, languid, languorous, lethargic, limp, listless, sluggish, enervated, spiritless, aimless, bloodless, torpid, passionless, idle, indolent, shiftless, inert, impassive, feeble
informal laid back, couldn't-care-less, easy going, slap-happy
British vulgar slang half-arsed
North American vulgar slang half-assed
rare Laodicean, pococurante