dotage

/ˈdəʊtɪdʒ/

Misollar

She was sinking into her dotage.

ot noun

Decline in judgment and other cognitive functions, associated with aging; senility.
Fondness or attentiveness, especially to an excessive degree.
Foolish utterance(s); drivel.

Manbalar: Wiktionary (Free Dictionary API orqali), Datamuse, Tatoeba (CC BY 2.0 FR), MyMemory.