50 entries under noun topic. ×

8
age(decline, period, maturity, infirmity)
7
senility(decline, weakness, life, period)
5
majority(ability, experience, maturity, youth)
5
second childhood(expression, decline, weakness, life)
4
anility(decline, life, period, age)
4
childhood(maturity, youth, parenthood)
4
decline
4
decrepitude(weakness, period, age, infirmity)
4
dotage(decline, weakness, period, age)
4
eld(life, period, age)
4
infirmity(weakness, period, age, feebleness)
4
longevity(adjective, life, period, coma)
4
oldness(life, period, age)
3
caducity
3
years
2
adolescence(maturity, youth, parenthood)
2
advancing years(life, period, age)
2
antiquity
2
autumn of life(life, period, age)
2
debility
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APASmart Define. (2015). old age thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/old_age/thesaurus/synonyms
ChicagoSmart Define. 2015. "old age thesaurus" https://smartdefine.org/old_age/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, old age thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/old_age/thesaurus/synonyms>.
MLASmart Define. "old age thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/old_age/thesaurus/synonyms>