300 entries under weak topic. ×

7
sapless(adjective, thin, delicate, shaky)
7
soft(adjective, loose, feeble, hesitant)
7
tottering(adjective, change, mean, strong)
7
uncertain(adjective, ill, sick, feeble)
7
wavering(adjective, delicate, uncertain, unstable)
7
weakened(adjective, thin, delicate, uncertain)
6
exhausted(verb, adjective, thin, delicate)
6
failing(adjective, thin, delicate, ill)
6
faltering(adjective, delicate, sick, unsettled)
6
indecisive(adjective, thin, delicate, uncertain)
6
languid(adjective, dull, easy, weakness)
6
rotten(adjective, mean, bad, weakness)
6
slack(adjective, weakness, loose, lifeless)
6
tottery(adjective, change, strong, unsettled)
6
unsure(adjective, change, strong, unstable)
6
vulnerable(adjective, delicate, loose, feeble)
5
anemic(adjective, delicate, uncertain, ill)
5
effete(adjective, weakness, thin, delicate)
5
fickle(adjective, indecisive, irresolute, vacillating)
5
limp(adjective, dull, easy, slow)
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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>