1. 即席的：extemporary 无准备的 | extempore 即席的 | extemporization 即席作成

2. 即席之作：extemporarilyoffhandedly 即席地 | extempore 即席之作 | extemporeon-the-spot 即席

3. 即席的、無準備的：contemporary 同時代的人物 | extempore 即席的、無準備的 | terrestrial 陸地上的

4. extempore的近义词

4. 即席的; 当场的 (形)：extemporary 无准备的; 随口说的 (形) | extempore 即席的; 当场的 (形) | extension cord 延长线

1. with little or no preparation or forethought

    e.g. his ad-lib comments showed poor judgment
           an extemporaneous piano recital
           an extemporary lecture
           an extempore skit
           an impromptu speech
           offhand excuses
           trying to sound offhanded and reassuring
           an off-the-cuff toast
           a few unrehearsed comments

    Synonym: ad-libextemporaneousextemporaryimpromptuoffhandoffhandedoff-the-cuffunrehearsed

1. without prior preparation

    e.g. he spoke extemporaneously

    Synonym: extemporaneouslyextemporarily