dotage
noun
[ ˈdəʊtɪdʒ ]
• the period of life in which a person is old and weak.
• "you could live here and look after me in my dotage"
Similar:
declining years,
winter/autumn of one's life,
advanced years,
old age,
elderliness,
agedness,
oldness,
senescence,
senility,
superannuation,
decrepitude,
second childhood,
eld,
caducity,
Origin:
late Middle English: from dote + -age.