Impromptu speeches are usually used in short informal meetings where the audience can interrupt and ask questions to help guide the speech and retrieve the information they need from the speaker.

When would you use a impromptu speech?

The distinctive feature is the unprepared delivery and the suddenness with which a person is confronted with a speech situation. Impromptu speaking is often required at those times when a person is called upon without warning ―to say a few words‖ at a luncheon, special meeting, social gathering, or other occasion.

What is an example of impromptu?

The definition of impromptu is something done without advance thought or without a plan. When everyone gets together and decides to throw a party at the spur of the moment, this is an example of an impromptu party. ... The party began with an impromptu rendition of 'Happy Birthday'.