extemporary

详细解释:a. 即席的, 权宜之计的, 临时的, 善于即席讲话的, 不用讲稿的, 无准备的, 当场的

词型变化：

副词:extemporarily

英语解释：

形容词 extemporary:

with little or no preparation or forethought同义词：ad-lib, extemporaneous, extempore, impromptu, offhand, offhanded, off-the-cuff, unrehearsed