| supernatural(noun, adjective, obscure, dark, mysterious) |
| unbeknownst |
| unexposed(adjective, obscure, dark, secret, hidden) |
| unglorified(adjective, disrepute) |
| unintelligible(obscure, dark, superior, mysterious, heavenly) |
| uninvestigated(new, untried) |
| unknown region(noun, expression, idiom) |
| unperceived(adjective, obscure, strange, mysterious, indefinite) |
| unpopular |
| unremarked |
| unseen(adjective, obscure, dark, secret, hidden) |
| unsuspected |
| dark horse(noun, expression, idiom, possibility) |
| X(adjective, obscure, strange, mysterious, indefinite) |
| distant(adjective, obscure, experience, strange, humble) |
| far(adjective, obscure, experience, distant, different) |
| foreigner(noun, alien, visitor) |
| impenetrable(obscure, dark, superior, strange, mysterious) |
| clandestine(secret, hidden, underground, concealed, undisclosed) |
| close(obscure, dark, secret, hidden, concealed) |