8
sick(adjective, thin, pale, sickly, sickly-looking)
6
nauseated
6
queasy
5
sickly(adjective, weak, thin, ill, sick)
4
ill(weak, thin, sick, pale, unhealthy)
4
nauseous
3
bad
2
ailing(adjective, weak, thin, ill, feeble)
2
below par(expression, adjective, weak, thin, feeble)
2
down(adjective, weak, thin, ill, feeble)
2
faint(adjective, mean, weak, thin, ill)
2
indisposed(adjective, mean, weak, thin, ill)
2
laid low(expression, adjective, feeble, infirm, cranky)
2
off-color(adjective, mean, weak, thin, feeble)
2
rocky(adjective, mean, weak, thin, ill)
2
seedy(adjective, mean, weak, thin, feeble)
2
unwell(weak, ill, sick, unhealthy, sickly)
1
bilious(adjective, mean, weak, thin, ill)
1
cranky(adjective, mean, weak, thin, ill)
1
crazy
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APASmart Define. (2015). sickish thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/sickish/thesaurus/synonyms
ChicagoSmart Define. 2015. "sickish thesaurus" https://smartdefine.org/sickish/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, sickish thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/sickish/thesaurus/synonyms>.
MLASmart Define. "sickish thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/sickish/thesaurus/synonyms>