unprogrammed
adjective
un·pro·grammed ˌən-ˈprō-ˌgramd 
: not provided with a program : not programmed
an unprogrammed meeting
an unprogrammed device
Example Sentences
Recent Examples on the Web Amazon made its Alexa Answer program available to the general public this week after several months of beta testing, opening up its artificial intelligence assistant to crowdsourced recommendations for unprogrammed questions. 
Washington Post, 13 Sep. 2019 Zarif met with Macron and French, German and British diplomats as well at an unprogrammed gathering in Biarritz’ city hall. Washington Post, 26 Aug. 2019
Washington Post, 13 Sep. 2019 Zarif met with Macron and French, German and British diplomats as well at an unprogrammed gathering in Biarritz’ city hall. Washington Post, 26 Aug. 2019 Word History
First Known Use
1860, in the meaning defined above