| hidden(adjective, strange, remote, mysterious) |
| mysterious(strange, remote, indefinite, concealment) |
| unrevealed(strange, remote, mysterious, indefinite) |
| unsung(strange, remote, indefinite, unidentified) |
| secret(strange, remote, mysterious, indefinite) |
| concealed(strange, remote, mysterious, indefinite) |
| unascertained(strange, uncertainty, remote, mysterious) |
| X(strange, remote, mysterious, indefinite) |
| alien(strange, remote, mysterious, indefinite) |
| desolate(strange, remote, mysterious, indefinite) |
| distant(strange, remote, mysterious, indefinite) |
| exotic(strange, remote, mysterious, indefinite) |
| far(strange, remote, mysterious, indefinite) |
| far-off(strange, remote, mysterious, indefinite) |
| faraway(strange, remote, mysterious, indefinite) |
| foreign(strange, remote, mysterious, indefinite) |
| incog(strange, remote, mysterious, indefinite) |
| incognito(strange, remote, indefinite, unidentified) |
| little known(expression, strange, remote, mysterious) |
| nameless(strange, remote, mysterious, indefinite) |