Soot
Soot noun - A black colloidal substance consisting wholly or principally of amorphous carbon and used to make pigments and ink.
Show all Definitions
Synonyms for Soot
Sludge
Sludge noun - Soft wet earth.
Show all Definitions
Synonyms for Sludge
Nearby Words: sludgy, sludging
Mutual synonyms
Cite this Source
Sludge and Soot. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/soot/sludge
Soot & Sludge. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/soot/sludge>.
Sludge or Soot. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/soot/sludge.
Google Ngram Viewer shows how "soot" and "sludge" have occurred on timeline