3
unspeakable(adjective, endured)
3
unsupportable(adjective, endured)
2
cancerous(adjective, harmful, injurious, damaging, deadly)
2
cloying(revolting, overpowering)
2
contemptible(evil, shameful, depraved)
2
corroding(injurious, damaging, destructive)
2
crippling(adjective, harmful, injurious, damaging, destructive)
2
cussed(adjective, mean, nasty, hateful, unkind)
2
debased(evil, shameful, depraved)
2
degrading(harmful, injurious, detrimental)
2
dirty(adjective, bad, evil, nasty, offensive)
2
disastrous(adjective, harmful, injurious, damaging, deadly)
2
diseased(adjective, unhealthy)
2
distressing(cruel, unkind, upsetting, harmful, damaging)
2
filthy(adjective, bad, evil, offensive, base)
2
frowsty(adjective, rotten, stinking, smelly, putrid)
2
frowzy(adjective, bad, rank, foul, disagreeable)
2
fusty(adjective, rank, foul, disagreeable, sour)
2
gamy(adjective, bad, rank, foul, disagreeable)
2
gangrenous(adjective, unhealthy)
11 years ago|22k views|share |citing 
APASmart Define. (2015). noxious thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/noxious/thesaurus/synonyms
ChicagoSmart Define. 2015. "noxious thesaurus" https://smartdefine.org/noxious/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, noxious thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/noxious/thesaurus/synonyms>.
MLASmart Define. "noxious thesaurus" 17 July 2015. Web. 21 September 2026. <https://smartdefine.org/noxious/thesaurus/synonyms>