HyperDic

English > 1 sense of the word extemporaneous:
ADJECTIVEallextemporaneous, ad-lib, extemporary, extempore, impromptu, offhand, offhanded, off-the-cuff, unrehearsedwith little or no preparation or forethought
English > extemporaneous: 1 sense > adjective 1
MeaningWith little or no preparation or forethought.
Example "an extemporaneous piano recital"
Synonymsad-lib, extemporary, extempore, impromptu, offhand, offhanded, off-the-cuff, unrehearsed
BroaderunpreparedWithout preparation
Adverbsextemporaneouslywithout prior preparation