n. | 1. | The act or art of composing and rendering music, poetry, and the like, extemporaneously; |
2. | That which is improvised; an impromptu. |
Noun | 1. | improvisation - a creation spoken or written or composed extemporaneously (without prior preparation) |
2. | improvisation - an unplanned expedient Synonyms: temporary expedient | |
3. | improvisation - a performance given extempore without planning or preparation Synonyms: extemporisation, extemporization |