4
injurious
4
noisome(adjective, insalubrity)
4
pestiferous
4
unhealthful
4
unhygienic(adjective, unhealthy)
3
abscessed
3
contagious(adjective, unhealthy)
3
dingy(adjective, unclean)
3
dirty(adjective, unclean)
3
germy
3
harmful
3
inflamed(adjective, tender, uncomfortable, swollen, reddened)
3
malignant(adjective, unhealthy)
3
mephitic(adjective, insalubrity)
3
pathological(adjective, unhealthy)
3
pestilent(adjective, unhealthy, insalubrity)
3
purulent
3
pussy
3
putrefacient
2
defiled(adjective, unclean)
11 years ago|4.8k views|share |citing 
APASmart Define. (2015). septic thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/septic/thesaurus/synonyms
ChicagoSmart Define. 2015. "septic thesaurus" https://smartdefine.org/septic/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, septic thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/septic/thesaurus/synonyms>.
MLASmart Define. "septic thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/septic/thesaurus/synonyms>