300 entries under weak topic. ×

3
low(adjective, thin, delicate, ill)
3
nerveless(adjective, nervous, inadequate, hesitant)
3
rocky(adjective, mean, bad, thin)
3
thin(adjective, light, slight, delicate)
3
wimpy(adjective, dull, easy, thin)
2
breakable(adjective, delicate, flimsy, fragile)
2
brittle(adjective, delicate, flimsy, fragile)
2
drooping(adjective, dull, disease, relaxed)
2
fluctuating(indecisive, vacillating)
2
fly-by-night(adjective, light, slight, imaginary)
2
forceless(adjective, uncertain, inadequate, feeble)
2
frangible(adjective, delicate, flimsy, fragile)
2
hesitating(indecisive, vacillating, irresolution)
2
incapacitated(adjective, feeble, shabby, weakened)
2
languorous(adjective, dull, easy, slow)
2
pallid(adjective, thin, ill, feeble)
2
prostrate(adjective, uncertain, inadequate, feeble)
2
run down(expression, mean, sick, green)
2
scrawny(adjective, uncertain, feeble, frail)
2
slender(light, slight, imaginary, flimsy)
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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>