remark made spontaneously without prior preparation; his ad-libs got him in trouble with the politicians'

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

[ Syn: extemporaneous , extemporary , extempore , impromptu , offhand , offhanded , off-the-cuff , unrehearsed ]

said or done without having been planned or written in advance; he made a few ad-lib remarks

[ Syn: spontaneous , unwritten ]

perform without preparation; he extemporized a speech at the wedding

[ Syn: improvise , improvize , extemporize , extemporise ]