| hidden(adjective, obscure, new, mysterious, secret) |
| concealed(adjective, obscure, dark, new, mysterious) |
| secret(noun, adjective, obscure, dark, mysterious) |
| undisclosed(adjective, obscure, dark, secret, unknown) |
| covert(adjective, obscure, secret, unknown, hidden) |
| unknown(noun, adjective, obscure, dark, mysterious) |
| esoteric(adjective, obscure, dark, secret, private) |
| invisible(adjective, obscure, dark, superior, mysterious) |
| latent(adjective, obscure, dark, unknown, hidden) |
| occult(noun, adjective, obscure, dark, secret) |
| veiled(adjective, obscure, deep, mysterious, unknown) |
| mysterious(adjective, obscure, dark, new, remote) |
| unexposed(adjective, obscure, dark, unknown, hidden) |
| unidentified(adjective, strange, new, remote, mysterious) |
| untold(adjective, strange, new, remote, mysterious) |
| clandestine(adjective, secret, unknown, hidden, concealed) |
| cryptic(adjective, obscure, dark, unknown, hidden) |
| inherent(adjective, private, mental, inner) |
| innate(adjective, private, mental, inner) |
| inside(adjective, individual, essential, private, mental) |