Definition of impromptu in English:

impromptu

Syllabification: im·promp·tu
Pronunciation: /imˈpräm(p)ˌt(y)o͞o
 
/

adjective & adverb

noun (plural impromptus)

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  • A short piece of instrumental music, especially a solo, that is reminiscent of an improvisation.

Origin

mid 17th century (as an adverb): from French, from Latin in promptu 'in readiness', from promptus (see prompt).

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