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.