11
senility(noun, condition, age, infirmity, feebleness)
7
decrepitude(noun, deterioration, age, infirmity, feebleness)
7
dotage(noun, condition, age, infirmity, feebleness)
6
old age(noun, expression, idiom, period, age)
5
impermanence
4
age(noun, age, feebleness)
4
evanescence(noun, transientness)
4
superannuation(noun, age)
4
transience(noun, transientness)
3
anility
3
declining years(expression, idiom, age)
3
feebleness
3
fugacity
3
hoary age(expression, idiom, age)
3
mortality
3
oldness(noun, age, infirmity, feebleness, generation)
3
senescence(noun, age, infirmity, feebleness, generation)
2
advanced age(expression, idiom, age)
2
debility
2
decline
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APASmart Define. (2015). caducity thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/caducity/thesaurus/synonyms
ChicagoSmart Define. 2015. "caducity thesaurus" https://smartdefine.org/caducity/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, caducity thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/caducity/thesaurus/synonyms>.
MLASmart Define. "caducity thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/caducity/thesaurus/synonyms>