Synonyms and related words :
aloof, apathetic, arid, at rest, barren, blunt, bored, bovine, calm, careless, cloistered, cool, dense, detached, disinterested, dispassionate, distant, doltish, dry, dull, dumb, dwindling, earthbound, ebbing, even-tempered, even-tenored, fact, halcyon, heedless, hushed, impassive, imperturbable, inactive, incurious, indifferent, inert, inexcitable, infecund, infertile, inirritable, insouciant, isolated, lethargic, listless, literal, lumpish, mindless, moldering, mundane, obtuse, pacific, passive, patient, peaceable, peaceful, phlegmatic, placid, prosaic, prosing, prosy, quiescent, quiet, regardless, reposeful, reposing, restful, resting, secluded, sequestered, sequestrated, sheltered, slow, smooth, staid, steady, still, still as death, stillish, stilly, stoic, stuffy, stupid, subsiding, supine, thick, tranquil, unagitated, unconcerned, undisturbable, undisturbed, unemotional, unfanciful, unflappable, unideal, unimaginative, uninquiring, uninspired, uninterested, uninventive, uninvolved, unirritable, unmindful, unmoved, unnervous, unoriginal, unpassionate, unperturbed, unpoetic, unromantic, unromanticized, unruffled, unstirring, untroubled, waning, withdrawn, wooden