ad lib Synonyms

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