4
afflicted(adjective, unhealthy, unwell, poorly)
4
anile(adjective, weak, delicate, sick, feeble)
4
creaky(adjective, feeble, dilapidated, debilitated, deteriorated)
4
drained(adjective, weakened, incapacitated)
4
hesitant(adjective, weak, uncertain, feeble, doubtful)
4
imperfect(adjective, mean, weak, down, ill)
4
in poor health(expression, adjective, idiom, mean, weak)
4
irresponsible(adjective, irresolute)
4
languishing(adjective, weakness)
4
old(adjective, feeble, age, enervated, dilapidated)
4
pale(adjective, bad, weak, thin, ill)
4
peaked(adjective, mean, weak, thin, sick)
4
peaky(adjective, weak, thin, ill, sick)
4
spineless(adjective, irresolute)
4
unreliable(adjective, false, loose, ill, sick)
4
valetudinarian
4
volatile(adjective, irresolute)
3
aged(adjective, weak, thin, delicate, feeble)
3
bedfast
3
bedridden(adjective, mean, hurt, weak, sick)
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APASmart Define. (2015). infirm thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/infirm/thesaurus/synonyms
ChicagoSmart Define. 2015. "infirm thesaurus" https://smartdefine.org/infirm/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, infirm thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/infirm/thesaurus/synonyms>.
MLASmart Define. "infirm thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/infirm/thesaurus/synonyms>