75 entries under expression topic. ×

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in a decline(idiom, sick, shaky, unhealthy)
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in ill health(idiom, sick, shaky, unhealthy)
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in second childhood(idiom, enervated, senescent, irresilient)
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injure permanently
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lose effectiveness
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martyr to disease(idiom, disease)
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medical patient
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no avail
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no effect
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no longer law(adjective, idiom)
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non compos mentis(idiom, foolish, fantastic)
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non sequitur(idiom, reasoning)
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not feeling well(idiom, weak, ill, sick)
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not solid(ill, unhealthy, frail)
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not valid
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not well
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not young(enervated, senescent, irresilient)
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of no avail
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of unsound mind(idiom, foolish, fantastic)
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on the ropes(idiom, enervated, senescent, irresilient)
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APASmart Define. (2016). invalid thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/invalid/thesaurus/synonyms
ChicagoSmart Define. 2016. "invalid thesaurus" https://smartdefine.org/invalid/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, invalid thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/invalid/thesaurus/synonyms>.
MLASmart Define. "invalid thesaurus" 29 March 2016. Web. 20 September 2026. <https://smartdefine.org/invalid/thesaurus/synonyms>