| faked(fake, mock, affected, unprepared, impromptu) |
| immediate(adjective, spontaneous, unprepared, impromptu) |
| improv(fake, mock, affected, spontaneous, unprepared) |
| improviso(fake, mock, affected, spontaneous, unprepared) |
| informal(adjective, spontaneous, unprepared, impromptu) |
| played by ear(expression, fake, unprepared, unplanned, unrehearsed) |
| shot from the hip(expression, idiom, fake, affected, impromptu) |
| spur-of-the-moment(adjective, spontaneous, unprepared, impromptu, unplanned) |
| thrown off(expression, fake, mock, affected, unprepared) |
| tossed off(expression, fake, mock, affected, unprepared) |
| unwritten |
| vamped(fake, unprepared, unplanned, unrehearsed, winged) |
| whipped up(expression, fake, unprepared, unplanned, unrehearsed) |
| winged(fake, unprepared, unplanned, unrehearsed) |
| ad hoc(expression, idiom, spontaneous, unprepared, impromptu) |
| Hollywood(mock, affected, impromptu) |
| ad libitem(expression, idiom, nonpreparation) |
| ad libitum(expression, idiom) |
| affected(mock, impromptu) |
| arguable |