senile

Relating to or having diminished cognitive function, as when memory is impaired, because of old age.

Being a disease or condition whose cause is primarily advanced age.

At the end of an erosion cycle.

In physical geography, exhibiting features of old age in the geographical cycle: said of worn-flown land-forms.

Of, pertaining to, or characteristic of old age; proceeding from age; especially, pertaining to or proceeding from the weaknesses that usually attend old age: as, senile garrulity; senile petulance.

Of or pertaining to old age; proceeding from, or characteristic of, old age; affected with the infirmities of old age.

a form of gangrene occuring particularly in old people, and caused usually by insufficient blood supply due to degeneration of the walls of the smaller arteries.

Of, or relating to old age.

Exhibiting the deterioration in mind and body often accompanying old age; doddering.