| Solution | Length | |
|---|---|---|
| 4 letters | ||
| vamp | 4 | |
| spur | 4 | |
| snap | 4 | |
| 5 letters | ||
| adlib | 5 | |
| adhoc | 5 | |
| 6 letters | ||
| unmade | 6 | |
| ad hoc | 6 | |
| 7 letters | ||
| unready | 7 | |
| stopgap | 7 | |
| offhand | 7 | |
| scratch | 7 | |
| 9 letters | ||
| extempore | 9 | |
| Unhatched | 9 | |
| UNPLANNED | 9 | |
| surprised | 9 | |
| UNSTUDIED | 9 | |
| undevised | 9 | |
| 10 letters | ||
| unprepared | 10 | |
| unarranged | 10 | |
| OFFTHECUFF | 10 | |
| UNSCRIPTED | 10 | |
| 11 letters | ||
| UNORGANIZED | 11 | |
| UNCONTRIVED | 11 | |
| EXTEMPORARY | 11 | |
| spontaneous | 11 | |
| precipitate | 11 | |
| 12 letters | ||
| off the cuff | 12 | |
| 14 letters | ||
| taken unawares | 14 | |
| EXTEMPORANEOUS | 14 | |
| UNPREMEDITATED | 14 | |
| 15 letters | ||
| spurofthemoment | 15 | |