senility Meaning, Definition & Usage

  1. noun mental infirmity as a consequence of old age; sometimes shown by foolish infatuations
    dotage; second childhood.
  2. noun the state of being senile

WordNet

Se*nil"i*ty noun
Etymology
Cf. F. sénilité.
Definitions
  1. The quality or state of being senile; old age.

Webster 1913