enduringness (noun)

1. The old haunted house stood as a testament to the enduringness of evil forces within its walls.

2. Their love for each other was marked by enduringness, as they overcame countless obstacles to be together.

3. The use of strong and sturdy materials in the construction of the building ensured its enduringness against environmental stresses.

4. The protagonist's inner strength and enduringness helped them overcome the challenges presented in the story.