extemporize Synonyms

improvise extemporise devise improvize wing it play by ear hit off ad libitum think on one's feet busk it mockup do offhand speaking off the cuff do something off the cuff do something on the spur of the moment speak impromptu speak off the cuff speak extemporaneously do on the fly mock up clap up brainstorm concoct contrive fake improvisate improvisation improvised improvising invent jamming play play it by ear ad lib throw together toss off do off top of head