Foul
Foul adjective - Not clean.
Usage example: I wouldn't play in the foul rainwater that's collected in the feeding trough
Unclean is a synonym for foul in dirty topic. In some cases you can use "Unclean" instead the word "Foul" as an adjective or an adverb, when it comes to topics like disgusting, filthy, contaminated. popular alternative
Unclean
Unclean adjective - Not clean.
Usage example: a lackadaisical waiter who tried to set our table with smudged glasses and unclean silverware
Foul is a synonym for unclean in dirty topic. You can use "Foul" instead the word "Unclean" as an adjective or an adverb or a noun, if it concerns topics such as property, filthy. popular alternative
Nearby Word: uncleanly
Mutual synonyms
Both words in one sentence
- The word and idea of "unclean" has a connotation of "god-forsaken" and "sinful", with similar connotations for "dirty", "foul", and even "fishy".
- Touchstone : Truly, and to cast away honesty upon a foul slut were to put good meat into an unclean dish.
Source: Morton's Fork
Cite this Source
Unclean and Foul. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/foul/unclean
Foul & Unclean. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/foul/unclean>.
Unclean or Foul. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/foul/unclean.
Google Ngram Viewer shows how "foul" and "unclean" have occurred on timeline