Foul
Improper
Improper adjective - Not appropriate for a particular occasion or situation.
Foul and improper are semantically related. Sometimes you can use "Foul" instead an adjective "Improper".
Nearby Word: improperly
Mutual synonyms
Cite this Source
Improper and Foul. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/foul/improper
Foul & Improper. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/foul/improper>.
Improper or Foul. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/foul/improper.
Google Ngram Viewer shows how "foul" and "improper" have occurred on timeline