i Register
In some senses, dotard is marked as archaic, obsolete. Watch for register when choosing this word.
noun
An old person with impaired intellect; a senile person; one in their dotage.
Dotard, (ſaide he) let be thy deepe aduiſe; Seemes that through many yeares thy wits thee faile, And that weake eld hath left thee nothing wiſe, Els neuer ſhould thy iudgement be ſo frayle, To meaſure manhood by the ſword or mayle.
I ſpeake not like a dotard, nor a foole, As vnder priuiledge of age to bragge, What I haue done being yong, or what would doe, Were I not old, […]
One who dotes on another, showing excessive fondness; a doter.