extempore
/ɪkˈstempərɪ/adjective & adverb
- spoken or done without preparation即席的（地）, 即兴的（地）, 当场的（地）：
as adj. extempore public speaking即席演讲
as adv. he recited the poem extempore.他即席朗诵了那首诗。
词源
mid 16th cent.: from Latin ex tempore 'on the spur of the moment' （literally 'out of the time'）.