unscripted

Etymology

un- + scripted

adj

1. Not scripted; without a script.
   The audience was then invited to put its unscripted questions to the panel of officers on the platform - and a remarkably varied range of enquiries they proved to be. 1961 April, “Talking of Trains”, in Trains Illustrated, pages 194–195
   A decade after introducing the idea that unscripted shows could transform prime time, “Who Wants to Be a Millionaire” returns to ABC Sunday. Aug 6 2009, Bill Carter, “‘Millionaire,’ Far From Its Final Answer”, in New York Times, retrieved 2014-05-30
   "Secrets of the London Underground is completely unscripted. It is just me and Tim going to a location, and I have to contextualise where we are. July 13 2022, Siddy Holloway tells Tom Allett, “There are definitely more stories to tell”, in RAIL, number 961, page 50
2. (by extension) Unplanned, unexpected, spontaneous.
   Hoping to avoid any unscripted episodes during President Clinton's visit to the ancient city of Xian today, Chinese authorities yesterday detained two of the city's leading dissidents. June 25 1998, Tony Karon, “China Swoops Down on Dissidents”, in Time, retrieved 2014-05-30