Extemporaneous means to do or perform something without prior preparation or planning, typically referring to a speech or performance given on the spot. It implies speaking or acting in a spontaneous and improvised manner.
Interesting fact: The word “extemporaneous” comes from the Latin word “extemporaneus,” which means “on the spur of the moment” or “without time to prepare.” It is often used to describe impromptu speeches or performances, showcasing the speaker’s ability to think quickly and deliver a coherent message without prior rehearsal.