| Solution | Length | |
|---|---|---|
| 4 letters | ||
| AURA | 4 | |
| 5 letters | ||
| vague | 5 | |
| ritzy | 5 | |
| 6 letters | ||
| veiled | 6 | |
| random | 6 | |
| 7 letters | ||
| xfactor | 7 | |
| unclear | 7 | |
| 8 letters | ||
| sweeping | 8 | |
| nameless | 8 | |
| opposite | 8 | |
| 9 letters | ||
| UNDEFINED | 9 | |
| shapeless | 9 | |
| 10 letters | ||
| STOCHASTIC | 10 | |
| 11 letters | ||
| unutterable | 11 | |
| UNSPEAKABLE | 11 | |
| UNSPECIFIED | 11 | |
| 12 letters | ||
| jenesaisquoi | 12 | |
| UNDETERMINED | 12 | |
| 13 letters | ||
| unaccountable | 13 | |
| UNMENTIONABLE | 13 | |
| 15 letters | ||
| je ne sais quoi | 15 | |