115 entries under weak topic. ×

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anile(adjective, delicate, sick, feeble)
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cranky(thin, sick, pale, unhealthy)
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faltering(adjective, delicate, sick, feeble)
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flimsy(adjective, delicate, sick, feeble)
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halting(adjective, delicate, sick, feeble)
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insubstantial(delicate, unstable, shaky, insane)
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irresolute(adjective, delicate, sick, feeble)
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lackluster(thin, sick, pale, unhealthy)
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laid-low(thin, sick, pale, unhealthy)
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languid(thin, sick, pale, unhealthy)
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not feeling well(expression, idiom, sick, feeble)
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pining(thin, sick, pale, unhealthy)
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sensile(adjective, delicate, sick, feeble)
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vacillating(adjective, delicate, sick, feeble)
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wasting(sick, feeble, unwell, sickly)
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APASmart Define. (2016). ill thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/ill/thesaurus/synonyms
ChicagoSmart Define. 2016. "ill thesaurus" https://smartdefine.org/ill/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, ill thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/ill/thesaurus/synonyms>.
MLASmart Define. "ill thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/ill/thesaurus/synonyms>