287 entries under adjective topic. ×

4
internecine(injurious, damaging, destructive, fatal)
4
maleficent
4
noisome
4
ruinous(bad, injurious, damaging, deadly)
4
septic
4
treacherous(dangerous, malevolent)
4
unhealthy(bad, offensive, heavy, foul)
3
catty(mean, nasty, vicious, wicked)
3
corrosive
3
deathly
3
diabolic
3
diseased(unhealthy, spreading, cancerous)
3
disturbing
3
ill-natured(mean, malicious, malevolent, vindictive)
3
iniquitous
3
insalubrious
3
mephitic
3
morbid(nasty, gloomy, sickly)
3
pathological
3
perfidious
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APASmart Define. (2016). malignant thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/malignant/thesaurus/synonyms
ChicagoSmart Define. 2016. "malignant thesaurus" https://smartdefine.org/malignant/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, malignant thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/malignant/thesaurus/synonyms>.
MLASmart Define. "malignant thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/malignant/thesaurus/synonyms>