8
age(noun, decline, period, maturity, infirmity)
7
senility(noun, decline, weakness, life, period)
5
majority(noun, ability, experience, maturity, youth)
5
second childhood(noun, expression, decline, weakness, life)
4
adulthood(ability, experience, maturity, youth, parenthood)
4
anility(noun, decline, life, period, age)
4
childhood(noun, maturity, youth, parenthood)
4
decline(noun, maturity)
4
decrepitude(noun, weakness, period, age, infirmity)
4
dotage(noun, decline, weakness, period, age)
4
eld(noun, life, period, age)
4
infirmity(noun, weakness, period, age, feebleness)
4
longevity(noun, adjective, life, period, coma)
4
oldness(noun, life, period, age)
3
caducity(noun, period)
3
infancy
3
years(noun, period)
2
adolescence(noun, maturity, youth, parenthood)
2
advancing years(noun, life, period, age)
2
antiquity(noun, oldness)
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APASmart Define. (2015). old age thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/old_age/thesaurus/synonyms
ChicagoSmart Define. 2015. "old age thesaurus" https://smartdefine.org/old_age/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, old age thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/old_age/thesaurus/synonyms>.
MLASmart Define. "old age thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/old_age/thesaurus/synonyms>