[ si-nil-i-tee ]
See synonyms for senility on
  1. the state of being senile, especially the weakness or mental infirmity of old age.

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Origin of senility

First recorded in 1770–80; senile + -ity

Words Nearby senility Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use senility in a sentence