8 entries under infirmity topic. ×

9
senility(noun, decline, weakness, age)
7
decrepitude(noun, decline, collapse, deterioration, age)
6
age(noun, decline, age, feebleness)
6
old age(noun, expression, idiom, decline, period)
4
dotage(noun, decline, age, feebleness)
3
second childhood(noun, expression, idiom, decline, age)
3
senectitude(noun, decline, weakness, age)
1
feebleness(noun, decline, age)
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APASmart Define. (2015). senescence thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/senescence/thesaurus/synonyms
ChicagoSmart Define. 2015. "senescence thesaurus" https://smartdefine.org/senescence/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, senescence thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/senescence/thesaurus/synonyms>.
MLASmart Define. "senescence thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/senescence/thesaurus/synonyms>