| impromptu(informal, unplanned, spontaneously, improv, extemporize) |
| improvise(informal, unplanned, extemporize, ad-lib, off-the-cuff) |
| improvised(informal, impulsive, unplanned, extemporaneous, extemporize) |
| intentionally(willingly, openly, candidly) |
| made-up(informal, impulsive, unplanned, extemporaneous, extemporize) |
| more willingly(expression, adjective, freely, willingly, openly) |
| off-the-cuff(informal, impulsive, unplanned, extemporaneous, extemporize) |
| offhand(impulsive, extemporaneous, improv) |
| openly(adverb, freely, willingly, candidly, blatantly) |
| plainly(willingly, openly, candidly) |
| purposely(willingly, openly, candidly) |
| spontaneous(informal, unplanned, extemporize, off-the-cuff, extemporise) |
| spontaneously(adjective, adverb, impulsive, impromptu, willingly) |
| unchallenged(freely, willingly, openly, candidly, unasked) |
| unforced |
| unprepared(informal, unplanned, extemporize, off-the-cuff, extemporise) |
| unrehearsed(informal, impulsive, unplanned, extemporaneous, extemporize) |
| unreservedly(freely, willingly, openly, candidly, unasked) |
| voluntarily(freely, willingly, openly, candidly, unasked) |
| willingly(freely, openly, candidly, unchallenged) |