extemporize Synonyms

improvise improvize devise extemporise wing it play by ear ad libitum hit off 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 concoct contrive fake improvisate improvised improvising invent jamming play play it by ear ad lib throw together toss off brainstorm do off top of head