extempore Synonyms

extemporarily offhanded off-the-cuff offhand extemporaneously unrehearsed impromptu extemporary extemporaneous without preparation unprepared by ear improvisational stopgap made-up without consideration off your own bat unpremeditated according to pleasure off the top of head improv make shift on the spot unplanned unprompted unscripted without rehearsal on impulse ad lib improviso improvised improvisatory extemporized ad libitum extemporal casual cadenza impulsively informal ad hoc spontaneously unstudied spontaneous snap makeshift jury-rigged instinctive autoschediastic