The quality of being lasting; continuance, duration, permanence. Also: durability; †constancy, perseverance.

(un-, prefix1 affix 6.)

The quality of being unwearied.

Power of holding on or out; staying power.

The condition of being unwearied.

(un-, prefix1 affix 6.)

The quality of being indefatigable; incapability of being wearied; unremitting diligence or perseverance.

The quality of being indefatigable.

Ability to withstand wear, pressure, or damage; durability. Also: power of holding on or out, staying power (= last, n.5 2). Now usually more fully…

transferred and figurative. In various applications: Intellectual or moral robustness and vigour; capacity for perseverance or endurance; also (of…

(un-, prefix1 affix 6. Cf. unweariable, adj.)

With reference to a person: capacity for endurance; persistence, perseverance; staying power. (The more common sense.)

in a race or other contest (hence also gen.), power to ‘stay’ or continue in action for a long time; power of persistent effort.

The ability to persist in an activity which requires sitting for a long period of time; endurance, persistence.

As a mass noun: resilience.