# senility

> English word · Noun · IPA /səˈnɪlɪti/ · frequency rank #73,619

## Definitions
1. The bodily and mental deterioration associated with old age: Synonym of senescence.
2. The losing of memory and reason due to senescence.
3. An elderly, senile person.

## Etymology
From senile + -ity.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/senility