Improper
Improper adjective - Not appropriate for a particular occasion or situation.
Substitute and improper are semantically related. In some cases you can use "Substitute" instead an adjective "Improper".
Nearby Word: improperly
Substitute
Substitute adjective - Being such in appearance only and made with or manufactured from usually cheaper materials.
Improper and substitute are semantically related. Sometimes you can use "Improper" instead an adjective "Substitute".
Mutual synonyms
Cite this Source
Substitute and Improper. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/improper/substitute
Improper & Substitute. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/improper/substitute>.
Substitute or Improper. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/improper/substitute.
Google Ngram Viewer shows how "improper" and "substitute" have occurred on timeline