octogenarian

sexagenarian

Person in sixth decade

• supercentenarianSomeone past 110
• elderSenior figure of authority
• seniorHigher in rank

retiree · pensioner · grandparent · great-grandparent · old-timer · veteran · gray-haired · silver-haired · elderly · aged

retirement

Leaving the workforce permanently

• late-lifeOccurring in old age
• dotageAge-related mental weakness
• senescenceGradual functional decline with age

aging · elderhood · wisdom · experience · legacy · reminiscence · memoir · grandparenting · great-grandchildren

frail

Weak and breakable

• feebleWeak and ineffective
• decliningDecreasing in strength
• infirmWeak in body

fragile · weakening · vulnerable · dependent · homebound · bedridden · doddering · faltering · ailing · deteriorating

birthday

Annual date of origin

• celebrationFestive event marking occasion
• achievementAccomplished goal or deed
• milestoneNotable event marking progress

landmark · centenary · anniversary · tribute · honor · recognition · generational · survival · endurance · witness

spry

Lively despite years

• sprightlyEnergetic and nimble
• sharpFine-edged, or astute
• lucidMentally sharp and comprehensible

active · vigorous · resilient · robust · fit · healthy · alert · agile · independent · self-sufficient

• age descriptorsaged, elderly, old, young, youthful
• age slanggeezer, codger, coot, old fart, old timer
• age stagesinfant, toddler, child, teen, teenage
• age termsyoung, old, older, younger, youngest
• life stagesbaby, teenager, adult, childhood, adolescence
• old peopleelder, elderly, older, aged, old