ex‧tem‧po‧rize (
also extemporise British English) /ɪkˈstempəraɪz/
verb [intransitive] formal to speak or perform without preparation or practice
—extemporization /ɪkˌstempəraɪˈzeɪʃ
ən $ -rə-/
noun [uncountable and countable] [TahlilGaran] Dictionary of Contemporary English ▲