off-the-cuff Synonyms

extempore unrehearsed extemporary extemporaneous impromptu offhanded offhand unpremeditated unprepared extemporaneously by ear improvisational unforced made-up makeshift ad lib improv off-hand on impulse without rehearsing without preparing played by ear without consideration shot from the hip without rehearsal without preparation off the top of one's head unscripted unprompted spur of the moment unplanned ad hoc spontaneously winged improvisatory improvisatorial impetuous immediate freely fake extemporized ad libitum expedient casual automatically improvised improviso voluntary voluntarily unstudied