The Oxford Thesaurus An A-Z Dictionary of Synonyms - endurance n.

1) stamina, staying power, perseverance, persistence, resolution, fortitude, tenacity, patience, tolerance, Colloq US stick-to-it-iveness: He showed remarkable endurance in the pentathlon trials. 2) lasting quality, durability, longevity, lifetime, continuation: In this film, he uses the river as a symbol of endurance and timelessness.