4
prejudicial(adjective, harmful, unfavorable, arouse bad feelings)
4
queer(adjective, anxious, sick, well, uneasy)
4
ropy
4
sickish(weak, thin, sick, pale, unhealthy)
4
sinful
4
unbalanced(adjective, unstable, shaky, insane, unhealthy)
4
unfit(adjective, negative, sick, unhealthy, unwell)
4
unpleasant(adjective, mean, harsh, hostile, unfriendly)
4
unsatisfactory
4
unwholesome(adjective, bad, evil)
4
wan(adjective, weak, thin, sick, pale)
4
woozy(adjective, sick, unwell, nauseated, seasick)
4
wretched(adjective, gloomy, depressed)
3
affected(adjective, diseased)
3
ail(noun, weak, disorder, disease, sick)
3
amiss
3
anemic(adjective, weak, delicate, sick, feeble)
3
apocalyptic(adjective, arouse bad emotions)
3
bedridden(adjective, mean, weak, sick, feeble)
3
bilious(weak, thin, anxious, sick, pale)
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APASmart Define. (2016). ill thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/ill/thesaurus/synonyms
ChicagoSmart Define. 2016. "ill thesaurus" https://smartdefine.org/ill/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, ill thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/ill/thesaurus/synonyms>.
MLASmart Define. "ill thesaurus" 24 March 2016. Web. 22 September 2026. <https://smartdefine.org/ill/thesaurus/synonyms>