| fake(adjective, free, casual, impulsive, spontaneous) |
| free(adjective, informal, casual, impulsive, unprepared) |
| immediate(adjective, free, informal, casual, snap) |
| improvised(adjective, adverb, free, casual, offhand) |
| informal(adjective, free, casual, impulsive, snap) |
| jamming(adjective, free, informal, casual, snap) |
| made-up(adjective, free, informal, casual, snap) |
| off-the-cuff(adjective, spontaneous, unprepared, impromptu, unrehearsed) |
| off the cuff(expression, adjective, idiom, adverb, free) |
| off the hip(expression, idiom, adverb, offhand, impromptu) |
| off top of head(expression, adjective, idiom, adverb, informal) |
| out of hand(expression, idiom) |
| snap(adjective, free, informal, casual, impulsive) |
| spontaneous(adjective, free, informal, casual, snap) |
| spur-of-the-moment(adjective, free, informal, casual, snap) |
| spur of the moment(expression, adjective, idiom, adverb, offhand) |
| taking for ride(expression, idiom, free, informal, casual) |
| thought out loud(expression, idiom, free, informal, casual) |
| toss off(expression, adjective, free, fake, casual) |
| toss out(expression, adjective, free, fake, casual) |