1. the quality or state of failing to fulfill one’s duties or obligations
Usage: formal

Examples

• The employee’s undutifulness led to his dismissal.
• Her undutifulness toward her aging parents caused family tension.
• The soldier was reprimanded for his undutifulness to orders.
• The student’s undutifulness in completing assignments affected his grades.
• The committee criticized the official’s undutifulness in handling public funds.
• His undutifulness as a citizen was evident in his refusal to vote.