extemporaneous

词形变化：

副词: extemporaneously | 名词: extemporaneity |

词义辨析：

同义:

a.临时作成的, 即席的

improvised

improvisatory

off-the-cuff

ad-lib

unprepared

extempore

impromptu

on-the-spot

spur-of-the-moment

unrehersed

offhand

unpreineditated

spontaneous

a.临时的

makeshift

temporary

impermanent

occasional