senility; dotage; decrepitude
senility; dotage; decrepitude
to become decrepit; to become senile
to grow senile; to be childish with age; to be mentally slow; to be befuddled; to play stupid; to say something stupid (oft. on purpose; esp. as part of a comedic routine)
to become wasted by illness
dotage; feeble-minded old man; senile old fool; dotard