dotage

/ˈdoʊtɪdʒ/
noun
  1. The period of old age when a person's mental abilities are weakened, often characterized by confusion or childish behavior.
    • In his dotage, Grandpa often forgot where he put his glasses.
    • The old king's dotage left the kingdom in the hands of his advisors.
    • She cared for her father through his dotage with patience and love.
Antonyms
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