Past tense of doat; showed excessive fondness for someone or something, or displayed signs of mental decline due to old age.
The past tense form of the archaic verb 'doat,' which itself is a variant of 'dote.' Adding '-ed' is the standard English way to form the past tense of regular verbs.
When you read 'she doated upon her grandchildren' in a classic novel, it means she lavished them with excessive affection—but the same word could describe someone losing their mental faculties, showing how historical English used one word for two very different meanings!
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