What is an important characteristic of successful impromptu speeches?

Successful impromptu speeches are characterized by flexibility and adaptability because the speaker must often think on their feet and respond to unexpected topics or questions. This ability allows the speaker to shift their thoughts quickly and tailor their message to the audience's reactions and the flow of the conversation. Effective impromptu speaking doesn't involve sticking rigidly to a pre-prepared script, as spontaneity and genuine engagement with the audience are key factors. By being flexible, the speaker can better convey their message and connect with listeners in a meaningful way, making the speech more engaging and relevant.