ad lib Synonyms

ad libitum spontaneously offhand impromptu spontaneous unrehearsed extemporize improvise unwritten extemporary offhanded off-the-cuff improvize extempore extemporise extemporaneous extemporaneously play by ear improv wing it by ear fake it extemporisation a piacere unprepared unpremeditated on impulse unplanned extemporised do off top of head speak extemporaneously speak impromptu without preparing speak off the cuff winging it do offhand dashed off as one thinks best off the top of head as one wishes without rehearsal without preparation unscripted unarranged spur of the moment tossed off ad hoc however headfirst fake