1. the quality of being persistent and hardworking; diligent effort

Examples

• Her assiduousness in studying paid off when she received the highest grade in the class.
• The researcher’s assiduousness led to a breakthrough discovery after years of careful work.
• His assiduousness in practicing the piano was evident in his flawless performance.
• The team’s assiduousness in preparing for the presentation impressed their clients.
• She approached every task with remarkable assiduousness and attention to detail.
• The student’s assiduousness in completing assignments earned praise from all her teachers.