assiduousness
/əˈsɪdʒuəsnəs/
noun
- The quality of being careful, hardworking, and thorough; diligence.
- The team's assiduousness during the project ensured they met every deadline.
- His assiduousness in learning the piano paid off when he won the competition.
- Her assiduousness in checking every detail saved the company from a costly mistake.
Antonyms