1. a person, especially an elderly person, who is weak-minded or senile
Usage: often considered offensive or derogatory; literary or formal register

Examples

• The old dotard could barely remember his own name.
• He was dismissed as a dotard by his political opponents.
• In the play, the dotard king makes foolish decisions that endanger the kingdom.
• She refused to let her father be treated like a dotard simply because of his age.
• The novel portrays the protagonist's descent into dotage and confusion.