Foul
Foul adjective - Not clean.
Usage example: I wouldn't play in the foul rainwater that's collected in the feeding trough
Insanitary and foul are semantically related In some cases you can use "Insanitary" instead an adjective "Foul".
Insanitary
Insanitary adjective - Not sanitary or healthful.
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Synonyms for Insanitary
Foul and insanitary are semantically related in unhygienic topic. You can use "Foul" instead an adjective "Insanitary".
Mutual synonyms
Cite this Source
Insanitary and Foul. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/foul/insanitary
Foul & Insanitary. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/foul/insanitary>.
Insanitary or Foul. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/foul/insanitary.
Google Ngram Viewer shows how "foul" and "insanitary" have occurred on timeline