The term "extemporaneous" refers to something that is done without prior preparation or planning. It often describes speeches or performances that are delivered spontaneously, relying on the speaker's knowledge and ability to think on their feet. This skill is particularly valuable in situations where quick thinking is essential, such as in debates or impromptu discussions. In the context of public speaking, extemporaneous speeches allow speakers to engage with their audience more naturally. Unlike memorized presentations, these speeches can adapt to the audience's reactions and questions, making the communication more dynamic and interactive.