be in (one's) dotage

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be in (one's) dotage

To be in a state of senility or mental decline due to old age. Just because we are in our 70s doesn't mean we are in our dotage! You'd best treat your children well, for it is they who will look after you when you're in your dotage.
See also: dotage
References in periodicals archive ?
And if Charles is going to be King, it would be ideal if he were before he is in his dotage.