Word Study
self-possessed
CIDE DICTIONARY
self-possessed, a.
Composed or tranquil in mind, manner, etc.; undisturbed. [1913 Webster]
OXFORD DICTIONARY
self-possessed, adj. habitually exercising self-control; composed.
Derivative
self-possession n.
THESAURUS
self-possessed
aloof, assured, balanced, calm, collected, composed, confident, controlled, cool, detached, dignified, easy, easygoing, equanimous, equilibrious, even-tempered, firm-minded, forward, imperturbable, importunate, independent, levelheaded, peaceful, placid, poised, pushy, recollected, refined, reserved, self-asserting, self-assertive, self-assured, self-confident, self-contained, self-controlled, self-expressive, self-restrained, serene, strong-minded, strong-willed, together, tranquil, undisturbed, unflappable, unperturbed, unruffled, well-balancedROGET THESAURUS
self-possessed
Resolution
N resolution, determination, will, iron will, unconquerable will, will of one's own, decision, resolution, backbone, clear grit, true grit, grit, sand, strength of mind, strength of will, resolve, firmness, energy, manliness, vigor, game, pluck, resoluteness, zeal, aplomb, desperation, devotion, devotedness, mastery over self, self control, self command, self possession, self reliance, self government, self restraint, self conquest, self denial, moral courage, moral strength, perseverance, tenacity, obstinacy, bulldog, British lion, resolved, determined, strong-willed, strong-minded, resolute, self-possessed, decided, definitive, peremptory, tranchant, unhesitating, unflinching, unshrinking, firm, iron, gritty, indomitable, game to the backbone, inexorable, relentless, not to be shaken, not to be put down, tenax propositi, inflexible, obstinate, steady, earnest, serious, set upon, bent upon, intent upon, steel against, proof against, in utrumque paratus, resolutely, in earnest, in good earnest, seriously, joking apart, earnestly, heart and soul, on one's mettle, manfully, like a man, with a high hand, with a strong hand, at any rate, at any risk, at any hazard, at any price, at any cost, at any sacrifice, at all hazards, at all risks, at all events, a' bis ou a blanc, cost what it may, coute, a tort et a travers, once for all, neck or nothing, rain or shine, spes sibi quisque, celui qui veut celui-la peut, chi non s'arrischia non guadagna, frangas non flectes, manu forti, tentanda via est.Caution
N caution, cautiousness, discretion, prudence, cautel, heed, circumspection, calculation, deliberation, foresight, vigilance, warning, coolness, self-possession, self-command, presence of mind, sang froid, well-regulated mind, worldly wisdom, Fabian policy, cautious, wary, guarded, on one's guard, cavendo tutus, in medio tutissimus, vigilant, careful, heedful, cautelous, stealthy, chary, shy of, circumspect, prudent, discreet, politic, sure-footed, unenterprising, unadventurous, cool, steady, self-possessed, overcautious, cautiously, Int, have a care!, timeo Danaos, festina lente, ante victoriam ne canas triumphum, don't sing out victory before the triumph, give, every man thine ear but few thy voice, he who laughs last laughs best, il rit bien qui rit le dernier, ni firmes carta que no leas ni bebas agua que no v, nescit vox missa reverti, love all, trust a few, noli irritare leones, safe bind safe find, if it ain't broke, don't fix it.Sanity
N sanity, soundness, rationality, sobriety, lucidity, lucid interval, senses, sober senses, right mind, sound mind, mens sana, sane, rational, reasonable, compos mentis, of sound mind, sound, sound-minded, lucid, self-possessed, sober, sober-minded, in one's sober senses, in one's right mind, in possession of one's faculties, sanely.For further exploring for "self-possessed" in Webster Dictionary Online