Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun senility

2 senses of senility

Sense 1
dotage, second childhood, senility -- (mental infirmity as a consequence of old age; sometimes shown by foolish infatuations)
       => old age, years, age, eld, geezerhood -- (a late time of life; "old age is not for sissies"; "he's showing his years"; "age hasn't slowed him down at all"; "a beard white with eld"; "on the brink of geezerhood")

Sense 2
senility -- (the state of being senile)
       => oldness -- (the opposite of youngness)