undutiful's Usage Examples:

The war lingered on for a space on the continent; but Henry raised the siege of Rouen, which was being attacked by his eldest son and the king of France~ captured most of Richards castles in Poitou, and then received the, submission of his undutiful children.

It is but necessary to note that the younger Henry died in 1183, that Geoffrey perished by accident at a tournament in 1186, and that in 1189, when the old kings strength finally gave out, it was Richard who was leading the rebellion, to which John, the youngest and least worthy of the four undutiful sons, was giving secret countenance.

Henry was an undutiful son, and his reign was one long period of confusion, marked by incidents of the most ignominious kind.

disloyal subject, rather than of a disaffected and undutiful son.

of France, who suborned against him his undutiful and rebellious eldest son Robert, his negotiation with Flanders and Germany, deserve no more than a mention.

Synonyms:

impious, disrespectful,

Antonyms:

respectful, sacred, virtuous,