8
rotten(adjective, mean, weak, sick, green)
8
weak(adjective, mean, ill, sick, feeble)
7
in poor health(expression, adjective, idiom, mean, bad)
6
below par(expression, adjective, adverb, weak, sick)
6
debilitated(adjective, mean, weak, sick, feeble)
6
fragile(adjective, unstable, ill, shaky, insane)
6
invalid(adjective, mean, weak, sick, green)
5
bedridden(adjective, mean, weak, disease, ill)
5
faint(weak, ill, sick, unhealthy, trembling)
5
laid up(verb, expression, adjective, phrasal verb, health)
5
low(adjective, weak, ill, sick, well)
5
nauseated(adjective, mean, weak, ill, sick)
5
off colour
5
queer(anxious, sick, uneasy, uncomfortable, sickly)
5
ropy(sick, shabby, dingy, sordid)
5
rough
5
shaky(adjective, unstable, ill, sick, insane)
4
anemic(adjective, ill, sick, unfit, sickly)
4
down(adjective, health, mean, weak, sick)
4
peaky(adjective, weak, ill, sick, unhealthy)
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APASmart Define. (2016). unwell thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unwell/thesaurus/synonyms
ChicagoSmart Define. 2016. "unwell thesaurus" https://smartdefine.org/unwell/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, unwell thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unwell/thesaurus/synonyms>.
MLASmart Define. "unwell thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/unwell/thesaurus/synonyms>