38
ill(adjective, adverb, health, mean, bad)
27
ailing(adjective, adverb, mean, weak, disease)
27
poorly(adjective, adverb, mean, bad, weak)
27
sick(adjective, adverb, health, mean, bad)
26
under the weather(expression, adjective, idiom, adverb, disease)
25
sickly(adjective, adverb, weak, anxious, ill)
24
unhealthy(adjective, mean, ill, sick, green)
21
indisposed(adjective, mean, weak, disease, sick)
19
diseased(adjective, adverb, mean, bad, weak)
16
feeble(adjective, mean, weak, ill, sick)
15
out of sorts(expression, adjective, idiom, adverb, bad)
15
seedy(adjective, weak, disease, ill, sick)
14
infirm(adjective, mean, ill, sick, green)
14
unsound(adjective, ill, well, shaky, unhealthy)
12
frail(adjective, mean, weak, ill, sick)
10
afflicted(adjective, sick, affected, suffering, unhealthy)
9
not good
9
queasy(adjective, mean, weak, sick, well)
8
bad(adjective, ill, sick, poorly)
8
peaked(adjective, mean, weak, sick, green)
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APASmart Define. (2016). unwell thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/unwell/thesaurus/synonyms
ChicagoSmart Define. 2016. "unwell thesaurus" https://smartdefine.org/unwell/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, unwell thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/unwell/thesaurus/synonyms>.
MLASmart Define. "unwell thesaurus" 24 March 2016. Web. 21 September 2026. <https://smartdefine.org/unwell/thesaurus/synonyms>