(noun, adjective, adverb)


1. with little or no preparation or forethought

- an impromptu speech

Similar word(s): unprepared, extemporaneous, extemporary, extempore, offhand, offhanded, unrehearsed

Sentences with impromptu as an adjective:

- The party began with an impromptu rendition of 'Happy Birthday'.


1. without advance preparation

Similar word(s): spontaneously


1. an extemporaneous speech or remark

- a witty impromptu must not sound premeditated

Definition categories: communication, address, speech

2. a short musical passage that seems to have been made spontaneously without advance preparation

Definition categories: communication, passage