| Solution | Length | |
|---|---|---|
| eterne | 6 | |
| prolix | 6 | |
| sacred | 6 | |
| steady | 6 | |
| eonian | 6 | |
| 7 letters | ||
| eternal | 7 | |
| endless | 7 | |
| agelong | 7 | |
| supreme | 7 | |
| radiant | 7 | |
| undying | 7 | |
| tedious | 7 | |
| 8 letters | ||
| unending | 8 | |
| immortal | 8 | |
| timeless | 8 | |
| singsong | 8 | |
| constant | 8 | |
| infinite | 8 | |
| unfading | 8 | |
| 9 letters | ||
| permanent | 9 | |
| unceasing | 9 | |
| UNVARYING | 9 | |
| UNDEFINED | 9 | |
| perpetual | 9 | |
| unlimited | 9 | |
| perennial | 9 | |
| sovereign | 9 | |
| unbounded | 9 | |
| 10 letters | ||
| UNCHANGING | 10 | |
| UNEVENTFUL | 10 | |
| ubiquitous | 10 | |
| PROTRACTED | 10 | |
| 11 letters | ||
| UNREMITTING | 11 | |
| 12 letters | ||
| interminable | 12 | |
| 13 letters | ||
| UNINTERRUPTED | 13 | |