383 entries under adjective topic. ×

8
nauseous(disgusting, sick, unwell, diseased)
8
unfortunate(bad, evil, negative, disapproving)
7
dire(inexpedience, arouse bad emotions)
7
down(noun, health, mean, bad)
7
hurtful(help, mean, bad, evil)
7
invalid(mean, weak, sick, green)
7
malicious(mean, bad, evil, harsh)
7
mischievous(help, wicked, harmful, unfavorable)
7
seedy(weak, thin, sick, pale)
7
threatening(bad, evil, negative, unfavorable)
6
below par(expression, weak, sick, unwell)
6
calamitous(negative, disapproving, uncomplimentary, arouse bad emotions)
6
destructive(rude, negative, vicious, wicked)
6
laid up(expression, health, informal, sick)
6
malevolent(mean, bad, evil, harsh)
6
sinister(bad, evil)
6
unfriendly(mean, bad, evil, harsh)
6
unlucky(bad, evil, negative, disapproving)
6
weak(mean, bad, thin, delicate)
5
awful
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APASmart Define. (2016). ill thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/ill/thesaurus/synonyms
ChicagoSmart Define. 2016. "ill thesaurus" https://smartdefine.org/ill/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, ill thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/ill/thesaurus/synonyms>.
MLASmart Define. "ill thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/ill/thesaurus/synonyms>