Impromptu and Improv

Impromptu

Impromptu noun - Something that is performed, made, or done without preparation.
Usage example: although five different lines had been written, the best choice turned out to be an impromptu from the tired actor himself

Improv and impromptu are semantically related in unrehearsed topic. In some cases you can use "Improv" instead the word "Impromptu" as an adjective or an adverb or a noun.

Improv

Improv noun - Something that is performed, made, or done without preparation.
Usage example: the performance features a two-minute improv as well as scripted segments

Impromptu and improv are semantically related in extemporaneous topic. You can use "Impromptu" instead the word "Improv" as an adverb or an adjective or a noun, if it concerns topics such as unrehearsed, improvised, without preparation.
Cite this Source
Improv and Impromptu. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/impromptu/improv
Impromptu & Improv. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/impromptu/improv>.
Improv or Impromptu. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/impromptu/improv.
Google Ngram Viewer shows how "impromptu" and "improv" have occurred on timeline