80 entries under infirm topic. ×

31
weak(adjective, strong, light, slight, disease)
26
feeble(adjective, strong, light, weak, slight)
20
frail(adjective, strong, light, weak, slight)
19
run-down(adjective, shape, feeble, shabby, weakened)
18
fragile(adjective, strong, light, weak, slight)
16
broken-down(adjective, better, shabby, weakened)
15
flimsy(adjective, strong, light, weak, slight)
14
shaky(adjective, weak, slight, weakness, thin)
12
debilitated(adjective, weak, thin, delicate, uncertain)
12
delicate(adjective, strong, weak, slight, thin)
11
aged(adjective, weak, thin, delicate, shaky)
11
insubstantial(adjective, strong, light, weak, slight)
10
doddering(adjective, weak, thin, delicate, feeble)
10
unsubstantial(adjective, strong, light, weak, slight)
10
weakly(adjective, strong, weak, disease, thin)
9
unsound(adjective, strong, light, weak, slight)
9
effete(adjective, weak, thin, delicate, uncertain)
8
anile(adjective, weak, delicate, ill, sick)
8
sickly(adjective, weak, thin, delicate, uncertain)
7
enfeebled(adjective, weak, thin, delicate, ill)
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APASmart Define. (2015). decrepit thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/decrepit/thesaurus/synonyms
ChicagoSmart Define. 2015. "decrepit thesaurus" https://smartdefine.org/decrepit/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, decrepit thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/decrepit/thesaurus/synonyms>.
MLASmart Define. "decrepit thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/decrepit/thesaurus/synonyms>