off-the-cuff Synonyms

extempore impromptu offhanded offhand extemporary extemporaneous unrehearsed extemporaneously unpremeditated unprepared ad hoc by ear ad lib improvisational instinctively unforced made-up improv off-hand 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 on impulse spontaneously winged voluntary improvisatorial improvisation impetuous immediate freely fake extemporized ad libitum expedient casual automatically improvisatory improvised improvise voluntarily