73 entries under weak topic. ×

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incapable(feeble, helpless, powerless)
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incapacitated(helpless, incapable)
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ineffective(adjective, inert, unable, helpless)
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puny(infirm, fragile)
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slender(adjective, thin, delicate, feeble)
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slight(adjective, delicate, infirm, fragile)
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slim(adjective, thin, delicate, feeble)
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tenuous(adjective, thin, delicate, feeble)
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thin(adjective, delicate, slim, infirm)
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unable(adjective, feeble, helpless, powerless)
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unsubstantial(adjective, thin, delicate, feeble)
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wimpy(adjective, thin, delicate, feeble)
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sitting duck(noun, expression, adjective, idiom, open)
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APASmart Define. (2016). vulnerable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/vulnerable/thesaurus/synonyms
ChicagoSmart Define. 2016. "vulnerable thesaurus" https://smartdefine.org/vulnerable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, vulnerable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/vulnerable/thesaurus/synonyms>.
MLASmart Define. "vulnerable thesaurus" 11 March 2016. Web. 22 September 2026. <https://smartdefine.org/vulnerable/thesaurus/synonyms>