word meaning
Impromptu means done in the moment, without a prepared script.
In everyday use, impromptu describes something spontaneous. In speaking, it means hearing a topic and answering clearly with very little preparation.
Simple meaning
Impromptu means unplanned, unscripted or done at short notice.
Speaking meaning
Impromptu speaking is answering a topic out loud without memorising a full speech.
Where it appears
Interviews, meetings, debates, extempore rounds and classroom discussions all use impromptu speaking.
How to practise after learning the meaning.
Start with impromptu speaking topics, use the generator, then read speaking tips before your next retry.