utholdenhet

noun
  1. The ability to sustain prolonged physical or mental effort; endurance. noun
    Her utholdenhet during the marathon was truly impressive.
    The athlete's utholdenhet allowed him to finish the race despite the harsh conditions.
  2. The capacity to continue or persevere in a task or activity despite difficulties or fatigue. noun
    His utholdenhet in studying for the exams paid off with excellent grades.
    The project required a lot of utholdenhet to complete on time.