Improv and Impromptu

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. In some cases you can use "Impromptu" instead the word "Improv" as an adverb or an adjective or a noun, when it comes to topics like unrehearsed, improvised, without preparation.

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. You can use "Improv" instead the word "Impromptu" as an adjective or an adverb or a noun.
Cite this Source
Impromptu and Improv. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/improv/impromptu
Improv & Impromptu. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/improv/impromptu>.
Impromptu or Improv. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/improv/impromptu.
Google Ngram Viewer shows how "improv" and "impromptu" have occurred on timeline