| hidden(obscure, strange, new, complex, remote) |
| ignotus |
| incog(strange, new, remote, mysterious, indefinite) |
| incognito(strange, new, remote, indefinite, unidentified) |
| inglorious |
| mysterious(obscure, strange, new, complex, remote) |
| new(strange, remote, mysterious, unknown, indefinite) |
| no credit to(expression, idiom) |
| remote(strange, new, mysterious, unknown, indefinite) |
| renownless |
| secret(obscure, strange, new, complex, remote) |
| so-and-so(strange, new, remote, mysterious, indefinite) |
| strange(new, remote, mysterious, unknown, indefinite) |
| such-and-such(strange, new, remote, mysterious, indefinite) |
| unapprehended(strange, new, remote, mysterious, indefinite) |
| unascertained(strange, new, remote, mysterious, indefinite) |
| uncharted(adjective, strange, new, remote, mysterious) |
| under the radar |
| unexplained(strange, new, remote, mysterious, indefinite) |
| unexplored(strange, new, remote, mysterious, unknown) |