impromptu

From Wiktionary

Pronunciation[change]

Adjective[change]

Positive
impromptu

Comparative
none

Superlative
none

  1. If something is impromptu, it is not planned or rehearsed.
    The party began with an impromptu rendition of 'Happy Birthday'.
    An impromptu speech

Noun[change]

Singular
impromptu

Plural
impromptus

  1. (music) An impromptu in music is something played without forethought of what beats are going to come next it is playing in the moment.