a period of time during which a person is normally in a particular life state

the time of life between 60 and 70

the time of life between 70 and 80

the time of life between 80 and 90

the time of life between 90 and 100

grow old or older

make older

mental infirmity as a consequence of old age; sometimes shown by foolish infatuations

The quality of a person who is very old.

(literary) the later years of one's life, especially after one has finished their career.

The quality or state of being wasted and weakened by or as if by the infirmities of old age.

the time of life between 60 and 70

the time of life between 70 and 80

the time of life between 80 and 90

the time of life between 90 and 100