18 entries under noun topic. ×

4
senility(decline, weakness, age, infirmity)
3
age(decline, infirmity, feebleness, youth)
3
dotage(decline, weakness, age, infirmity)
3
elderliness(age, youth)
3
second childhood(expression, decline, weakness, age)
3
senescence(decline, weakness, age, infirmity)
2
anility
2
decline
2
infirmity
2
year(age, youth)
1
agedness(age, youth)
1
feebleness(decline, weakness, age, infirmity)
1
old age(expression, decline, weakness, period)
1
weakness(informal, age)
0
advanced age
0
decrepitude
0
fatuity
0
imbecility
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APASmart Define. (2015). senectitude thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/senectitude/thesaurus/synonyms
ChicagoSmart Define. 2015. "senectitude thesaurus" https://smartdefine.org/senectitude/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, senectitude thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/senectitude/thesaurus/synonyms>.
MLASmart Define. "senectitude thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/senectitude/thesaurus/synonyms>