Pollution
Pollution noun - Undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities.
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Synonyms for Pollution
Sludge and pollution are semantically related. In some cases you can use "Sludge" instead a noun "Pollution".
Sludge
Sludge noun - Soft wet earth.
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Synonyms for Sludge
Pollution and sludge are semantically related. Sometimes you can use "Pollution" instead a noun "Sludge".
Nearby Words: sludgy, sludging
Mutual synonyms
Related pairs
How words are described
| high | high pollution | high sludge |
| deadly | deadly pollution | deadly sludge |
| acidic | acidic pollution | acidic sludge |
| radioactive | radioactive pollution | radioactive sludge |
| Other adjectives: toxic, horrific, industrial. | ||
Both words in one sentence
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It's an alien life-form that feeds on pollution and is essentially a walking pile of toxic sludge.
Source: Walking Wasteland -
In Lilo & Stitch: The Series, there's experiment 505, Ploot, who is designed to collect and absorb pollution and turn it into a toxic sludge to flood cities with.
Source: Muck Monster -
Green Aesop: The Sludge-o-Matic and the pollution it generates are what start all the problems.
Source: Video Game / Day of the Tentacle
Cite this Source
Sludge and Pollution. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/pollution/sludge
Pollution & Sludge. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/pollution/sludge>.
Sludge or Pollution. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/pollution/sludge.
Google Ngram Viewer shows how "pollution" and "sludge" have occurred on timeline