Synonyms and related words :
adamant, adamantine, aloof, apathetic, at a standstill, at anchor, at rest, aweless, calm, cast-iron, cloistered, collected, composed, cool, dead-still, dispassionate, dour, dwindling, ebbing, even-tenored, expected, expecting, firm, fixed, flinty, grim, halcyon, hard, hard-core, hushed, idle, immobile, immotive, immovable, immutable, impassive, implacable, impliable, indifferent, inelastic, inexcitable, inexorable, inflexible, intransigent, iron, irreconcilable, isolated, moldering, motionless, moveless, out of commission, pacific, peaceable, peaceful, placid, quiescent, quiet, relentless, reposeful, reposing, restful, resting, riding at anchor, rigid, rigorous, rock-ribbed, secluded, sequestered, sequestrated, sheltered, smooth, static, stationary, statuelike, steely, stern, stiff, still, still as death, stillish, stilly, stock-still, stoic, stoical, stolid, stony, subsiding, tranquil, unaffected, unagitated, unalterable, unamazed, unanimated, unastonished, unastounded, unawed, unbending, unbewildered, unchangeable, uncompromising, unconcerned, undazed, undazzled, undisturbed, undumbfounded, unemotional, unemployed, unfeeling, ungiving, unimpressed, uninfluenced, uninspired, unmarveling, unmoving, unperturbed, unrelenting, unresponsive, unruffled, unstirred, unstirring, unstruck, unsurprised, unswayed, unsympathetic, untouched, untroubled, unwondering, unyielding, waning, wonderless