Extemporises

Part of speech: verb

Definitions

1. To deliver a performance or speech spontaneously without prior rehearsal or preparation
2. To produce or present something off the cuff, relying on impromptu skill rather than planning
3. To act or speak in an unrehearsed manner, creating content on the spot without advance notice

Etymology: "Extemporises" is the third-person singular form of "extemporise", so the history belongs to the verb itself. That verb comes from the Latin phrase "ex tempore", meaning "out of time" or, more usefully, "on the spur of the moment." The Latin phrase joins "ex", "from" or "out of", with "tempore", the ablative of "tempus", "time." Its sense was therefore about acting without advance preparation, which is exactly what the modern verb keeps. English speakers took the phrase over whole and then turned it into a verb, so that to extemporise is to speak or perform by drawing on what is already in one's head rather than reading from a script.