dottard
/ˈdɒtərd/ or /ˈdɒtɑːrd/Definitions
1. noun
A foolish or decrepit old man, often used pejoratively.
“The villagers laughed at the dottard who tried to ride a bike down the hill.”
2. noun
A person who is foolish or weak-minded, especially an old man.
“The old man was ridiculed for being a dottard and getting lost in the woods.”