noun
fortitude
FOR-tih-tood/ˈfɔːrtɪtuːd/
Courage and endurance in facing pain, danger, or hardship.
She faces each painful treatment with remarkable patience and fortitude.

Etymology
Fortitude names the quality of being strong or brave. In its moral sense, that strength is the courage and firmness to endure pain or danger.
In context
the emergencies of which will demand all my fortitude I am required only to raise the spirits of others but sometimes to sustain my own when theirs are failing
More examples
- It takes fortitude to rebuild your life after losing everything.
- The stranded hikers show great fortitude as they await rescue.
- His quiet fortitude helps him endure months of uncertainty.
Similar words
- courage
- Courage emphasizes facing fear, not necessarily enduring prolonged hardship.
- endurance
- Endurance stresses lasting through difficulty, without necessarily implying courage.