In my roles of moral icon, sage, clot and dotard, I have been asked many questions.
From the guardian.co.uk
One of the scant perks of being a raving dotard is meeting such alumni.
From the guardian.co.uk
And that's my final dotard word.
From the guardian.co.uk
As the aunt, Mona Washbourne has only to loosen her hair and widen her eyes to be transformed from a bustling peas ant into a feeble dotard, nodding off after lunch.
From the time.com
More examples
An oldster in his dotage; someone whose age has impaired his intellect