unrehearsed Synonyms

extempore impromptu extemporary extemporaneous offhanded off-the-cuff offhand improv extemporaneously unpremeditated unprepared by ear improvisational made-up off-hand on the fly not prepared according to pleasure as one thinks best as one wishes without rehearsal without preparation unscripted unprompted spur of the moment unplanned ad lib ad hoc improviso improvise improvised improvisatory improvisatorial extemporized ad libitum casual autoschediastic impulsive informal spontaneously unstudied unexpected unbidden spontaneous snap natural makeshift instinctive automatic