| curious(adjective, unusual, strange, unknown) |
| desolate(strange, remote, mysterious, indefinite) |
| extraordinary(adjective, obscure, unusual, strange) |
| hidden(strange, remote, mysterious, indefinite) |
| incog(strange, remote, mysterious, indefinite) |
| incognito(strange, remote, indefinite, unidentified) |
| little known(expression, strange, remote, mysterious) |
| mysterious(unusual, strange, remote, unknown) |
| nameless(strange, remote, mysterious, indefinite) |
| novel(unusual, strange, mysterious, unknown) |
| obscure(strange, unknown, indefinite, unrelated) |
| recondite(unknown, untried) |
| remarkable(adjective, unusual, strange, unknown) |
| secret(strange, remote, mysterious, indefinite) |
| so-and-so(strange, remote, mysterious, indefinite) |
| such-and-such(strange, remote, mysterious, indefinite) |
| unaccustomed(adjective, experience, strange, distant) |
| unapprehended(strange, remote, mysterious, indefinite) |
| unascertained(strange, remote, mysterious, indefinite) |
| uncelebrated(strange, remote, mysterious, indefinite) |