Noun:
remark made spontaneously without prior preparation;his ad-libs got him in trouble with the politicians
Adjective:
with little or no preparation or forethought;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
said or done without having been planned or written in advance;he made a few ad-lib remarks
Verb:
perform without preparation;he extemporized a speech at the wedding
ad referendum待进一步审核…attack ad攻击性广告employment ad经 招聘广告…ad hoc特定的ad hominem诉诸感情的ad infinitum无限(永远ad litem专为某一诉讼指…want ad征求广告ad interim临时的ad craft经 广告办理业…ad court单数局classified ad分类广告ad finem最后最终ad valorem按价的ad lib.医 随意，任意…ad libitum随意地women's lib妇女解放运动…
近义词 invent发明make up弥补ad hoc特定的offhand即时的impromptu即席的wing it即兴表演makeshift临时的offhanded立即的extempore即兴的informal非正式的improvise即兴创作unplanned无计划的improvize即兴创作extemporary当场的unwritten不成文的unprepared无准备的extemporize即席演说extemporise当场作成off-the-cuff未预备的improvised即席而作的extemporaneous即兴的unrehearsed未经排练的spontaneous自发的，自然的，本能的…
形容词100%
用作名词The comedian ad libbed most of his routine.那个喜剧演员大多是即兴表演。