Fortitude

n.	1.	Power to resist attack; strength; firmness. The fortitude of the place is best known to you. - Shak.
	2.	That strength or firmness of mind which enables a person to encounter danger with coolness and courage, or to bear pain or adversity without murmuring, depression, or despondency; passive courage; resolute endurance; firmness in confronting or bearing up against danger or enduring trouble. Extolling patience as the truest fortitude. - Milton. Fortitude is the guard and support of the other virtues. - Locke.

Noun

1.

fortitude - strength of mind that enables one to endure adversity with courage

acceptance, backbone, boldness, bottom, bravery, bulldog courage, cardinal virtues, charity, constancy, courage, courageousness, dauntlessness, decisiveness, determination, endurance, energy, faith, fearlessness, fixity of purpose, forbearance, forbearing, forbearingness, force, gameness, gaminess, grit, grittiness, guts, gutsiness, hardihood, hardiness, heartiness, hope, indulgence, intestinal fortitude, intrepidity, iron will, justice, lenience, leniency, long-sufferance, long-suffering, longanimity, love, lustihood, lustiness, mettle, mettlesomeness, might, mightiness, moral courage, moral fiber, natural virtues, nerve, nerviness, obstinacy, patience, patience of Job, patientness, perseverance, pertinaciousness, pertinacity, pith, pluckiness, potency, power, powerfulness, prudence, resoluteness, resolution, robustness, ruggedness, sand, self-control, spirit, spunk, spunkiness, stalwartness, stamina, staying power, stick-to-itiveness, sticking power, stoicism, stoutness, strength, strength of mind, strength of purpose, strength of will, sturdiness, sufferance, supernatural virtues, sweet reasonableness, temperance, tenaciousness, tenacity, theological virtues, tolerance, toleration, toughness, valiancy, valor, valorousness, vigor, vigorousness, vitality, waiting game, waiting it out, will, will of iron, will power