EXTEMPORANEOUS

adjective Etymology: Late Latin extemporaneus, from Latin ex tempore Date: 1673 1. a. composed, performed, or uttered on the spur of the moment ; impromptu , carefully prepared but delivered without notes or text, skilled at or given to ~ utterance, happening suddenly and often unexpectedly and usually without clearly known causes or relationships , provided, made, or put to use as an expedient ; makeshift , ~ly adverb ~ness noun