the ability to endure

bearing hardship; staying power

calm courage, self-control, in the face of pain, danger or difficulty

strength of mind; guts

(an ability for) suffering trouble, inconvenience etc without complaining

capacity, willingness to endure

energy and physical, mental and moral strength, making it possible for a person or animal to work hard for a long time, to survive a serious illness, difficulty etc

strength, vigor

diligence, stubbornness

diligence, stubbornness