tirelessness

/ˈtaɪərləsnəs/
noun
  1. The quality of being able to work or continue for a long time without getting tired.
    • Her tirelessness during the long project impressed everyone on the team.
    • The athlete's tirelessness in training helped her win the gold medal.
    • We admired the tirelessness of the rescue workers who searched all night.
Antonyms
What does "tirelessness" mean? | whatsthatwordmean | whatsthatwordmean