Synonyms of ad-libbing

2 Syllables
made-up
3 Syllables
spontaneous, off-the-cuff, impromptu
4 Syllables
improvised, extempore, unprepared, unrehearsed, improvise, spontaneities, spontaneity, autoschediasm
5 Syllables
improvisations, improvisation, extemporaneous, extemporize, extemporized
6 Syllables
extemporization