Synonyms:
- ad hoc,
- ad libitum,
- ad-lib,
- band-aid,
- extemporaneous,
- extemporary,
- extempore,
- impromptu,
- improvisational,
- improvisatorial,
- improvise,
- improvised,
- improviso,
- makeshift,
- makeshifty,
- off-the-cuff,
- offhand,
- provisional,
- stopgap,
- temporary,
- tentative,
- unrehearsed