Equanimity

n.

1.

Evenness of mind; that calm temper or firmness of mind which is not easily elated or depressed; patience; calmness; composure; as, to bear misfortunes with equanimity.

Noun

1.

equanimity - steadiness of mind under stress; "he accepted their problems with composure and she with equanimity" Synonyms: calm, calmness, composure

accordance, aplomb, assurance, ataraxy, balance, calm, calmness, composure, confidence, consistency, consonance, constancy, continuity, coolness, correspondence, detachment, equability, equilibrium, equipoise, evenness, homogeneity, imperturbability, level head, levelheadedness, monolithism, persistence, phlegm, placidity, poise, possession, presence of mind, restraint, sangfroid, self-assurance, self-command, self-confidence, self-control, self-possession, self-restraint, serenity, stability, steadfastness, steadiness, tranquillity, uniformity, unity, unruffledness, well-regulated mind