Impromptu
Impromptu adjective - Made or done without previous thought or preparation.
Interim
Interim adjective - Intended to last, continue, or serve for a limited time.
Impromptu and interim are semantically related in provisional topic. Sometimes you can use "Impromptu" instead an adjective "Interim".
Mutual synonyms
Cite this Source
Interim and Impromptu. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/impromptu/interim
Impromptu & Interim. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/impromptu/interim>.
Interim or Impromptu. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/impromptu/interim.
Google Ngram Viewer shows how "impromptu" and "interim" have occurred on timeline