endurance

/ɪnˈdʊrəns/
noun
  1. The ability to continue doing something difficult, painful, or tiring for a long time.
    • Marathon runners need incredible physical endurance.
    • The hiker's endurance was tested by the steep mountain trail.
    • Her mental endurance helped her finish the challenging project.
  2. The length of time something can last or continue to function.
    • The car's engine is known for its endurance over many miles.
    • The battery's endurance is about eight hours of continuous use.
    • They tested the endurance of the new fabric under harsh conditions.