18
sick(adjective, adverb, mean, bad, weak)
16
ailing(adjective, mean, weak, disease, ill)
16
unhealthy(adjective, mean, weak, sick, green)
14
ill(adjective, adverb, mean, bad, weak)
14
unwell(adjective, adverb, mean, bad, weak)
12
unsound(adjective, ill, well, unhealthy, frail)
10
infected(adjective, mean, bad, weak, shock)
10
infirm(adjective, mean, weak, sick, feeble)
10
morbid(adjective, nasty, gloomy, sickly)
10
sickly(adjective, weak, thin, sick, feeble)
9
afflicted(adjective, shock, commotion, astonishment)
9
not good
9
pathological(adjective, unhealthy)
8
bad(adjective, ill, sick, unwell, poorly)
8
indisposed(adjective, mean, weak, disease, sick)
6
affected(adjective, shock, commotion, astonishment)
6
contaminated(verb, adjective, dirty, unhealthy, polluted)
6
poorly(adjective, adverb, mean, disease, ill)
6
under the weather(expression, adjective, idiom, adverb, mean)
6
unwholesome(adjective, unhealthy)
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APASmart Define. (2015). diseased thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/diseased/thesaurus/synonyms
ChicagoSmart Define. 2015. "diseased thesaurus" https://smartdefine.org/diseased/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, diseased thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/diseased/thesaurus/synonyms>.
MLASmart Define. "diseased thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/diseased/thesaurus/synonyms>