| muck(noun, waste, clean, refuse, substance) | |
| slime(noun, waste, clean, refuse, corruption) | |
| ooze(noun, clean, liquid, dirt, swamp) | |
| goo(noun, food, substance, dirt, swamp) | |
| mire(noun, waste, clean, refuse, corruption) | |
| gunk(noun, food, dirt, swamp, corn) | |
| silt(noun, waste, refuse, corruption, deposit) | |
| scum(noun, muck, goo, gunk) | |
| sediment(noun, waste, refuse, corruption, deposit) | |
| slop(noun, waste, clean, refuse, corruption) | |
| glop(noun, food, swamp, corn) | |
| goop | |
| fungus(muck, goo, gunk) | |
| gelled waste(expression, muck, goo, gunk) | |
| grease | |
| mucus(muck, goo, gunk) | |
| oil |
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| APA | Smart Define. (2015). sludge thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/sludge/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "sludge thesaurus" https://smartdefine.org/sludge/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, sludge thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/sludge/thesaurus/synonyms>. |
| MLA | Smart Define. "sludge thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/sludge/thesaurus/synonyms> |