| deleterious(adjective, insalubrity) | |
| dusty(adjective, unclean) | |
| fatal | |
| fetid(adjective, unclean) | |
| filthy(adjective, unclean) | |
| grimy(adjective, unclean) | |
| grubby(adjective, unclean) | |
| grungy(adjective, unclean) | |
| impure(adjective, unclean) | |
| lethal | |
| morbific | |
| mucky(adjective, unclean) | |
| muddy(adjective, unclean) | |
| obscene(adjective, unclean) | |
| pernicious | |
| red(adjective, tender, swollen, reddened) | |
| scatological(adjective, unclean) | |
| scruffy(adjective, unclean) | |
| shabby(adjective, unclean) | |
| sloppy(adjective, unclean) |
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| APA | Smart Define. (2015). septic thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/septic/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "septic thesaurus" https://smartdefine.org/septic/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, septic thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/septic/thesaurus/synonyms>. |
| MLA | Smart Define. "septic thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/septic/thesaurus/synonyms> |