EXTEMPORE definition: 1. done or said without any preparation or thought: 2. done or said without any preparation or…. Learn more. Extempore refers to a speech or presentation delivered without prior preparation or notes, often on a given topic provided at the moment. It tests a speaker’s ability to think quickly, organize ideas logically, and communicate effectively within a short time frame. Extempore is commonly used in public speaking competitions, interviews, and professional scenarios to assess… The meaning of EXTEMPORE is in an extemporaneous manner. How to use extempore in a sentence.