1. the quality or state of being dutiful; careful and conscientious fulfillment of one's obligations or responsibilities

Examples

• Her dutifulness to her family was evident in how she cared for her aging parents.
• The soldier's dutifulness earned him respect from his commanding officers.
• He approached his work with such dutifulness that he never missed a deadline.
• Dutifulness to one's commitments is a sign of good character.
• She fulfilled her role as team captain with admirable dutifulness.
• The student's dutifulness in completing assignments helped her succeed in school.