noun

stamina

STAM-ih-nuh/ˈstæmɪnə/

Ability to sustain physical or mental effort.

The runner's stamina sustains her steady pace along the long uphill trail.

A fit older Black woman maintaining steady pace during a long uphill trail run, sustained effort.
Etymology

From Latin stamen, “thread,” stamina first named fundamental elements or supports. Applied to a person’s inborn vital capacities, it came to mean the strength that sustains effort and enables recovery.

In context

A Whey to Explain1:34
Training for strongman combines heavy lifting with endurance work, helping athletes build both maximum strength and stamina. Flexibility, mobility, and stamina are crucial, as many events demand both power and sustained effort.
Every Strength & Endurance Discipline Explained in 5 Minutes (part 1)

More examples

  • I lack the stamina to run five miles without stopping.
  • Solving difficult problems all afternoon takes mental stamina.
  • Her stamina improves as she gradually increases her training.

Similar words

endurance
Emphasizes lasting through hardship, discomfort, or prolonged effort.
persistence
Emphasizes continuing despite obstacles, rather than capacity for sustained effort.