ex·tem·po·ra·ne·ous 
/ɛkˌstɛmpəˈreɪnijəs/ adjective
/ɛkˌstɛmpəˈreɪnijəs/ adjective [more extemporaneous; most extemporaneous] : made up or done without special preparation — usually used to describe public speaking ▪ He made an extemporaneous speech. ▪ extemporaneous remarks
— ex·tem·po·ra·ne·ous·ly adverb
▪ speaking extemporaneously
▪ speaking extemporaneously
