undutiful

The employee's undutifulness led to dismissal.

その従業員の義務不履行は解雇につながった。

She was criticized for being an undutiful daughter.

彼女は不孝な娘だと批判された。

His undutifulness to his family caused rifts.

彼の家族に対する不孝は亀裂を生んだ。

His undutiful behavior disappointed his parents.

彼の不孝な振る舞いは両親を失望させた。