senility
noun/səˈnɪlɪti/
Etymology From senile + -ity.
1
The bodily and mental deterioration associated with old age: Synonym of senescence.
- Near-synonym: second childhood
2
The losing of memory and reason due to senescence.
- He was entering his years of senility and not liking it a bit.
3
Archaic An elderly, senile person.
- There was no need for George Playford to talk as if they were doddering senilities.1934 May, Hearst's International combined with Cosmopolitan, page 117:
- Derived terms
- presenility
- Related terms
- senile