assiduousness

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English[edit]

Etymology[edit]

assiduous +‎ -ness

Noun[edit]

assiduousness (uncountable)

  1. Conscientious and unremitting diligence.
    • 1856, William L. G. Smith, The Life and Times of Lewis Cass‎, p. 323:
      Finding that his health was failing, because of the assiduousness which a proper discharge of the duties of the position demanded the year round, he acquainted the President with his desire to withdraw from public duties.