| unrevealed(adjective, obscure, dark, secret, unknown) |
| hidden(adjective, cover, obscure, dark, secret) |
| secret(adjective, unknown, hidden, personal, concealed) |
| concealed(adjective, obscure, dark, secret, imperceptible) |
| private(adjective, obscure, secret, unknown, hidden) |
| covert(adjective, obscure, dark, hidden, imperceptible) |
| mysterious(adjective, obscure, dark, secret, unknown) |
| undivulged(cover, obscure, dark, equivocal, ulterior) |
| unexpressed(adjective, cover, obscure, dark, equivocal) |
| confidential(adjective, personal, clandestine, underground, hush-hush) |
| latent(obscure, dark, secret, unknown, hidden) |
| suppressed |
| ulterior(adjective, cover, obscure, secret, imperceptible) |
| untold(concealment, latency implication) |
| invisible(adjective, obscure, dark, unknown, hidden) |
| classified(obscure, unknown, personal, clandestine, underground) |
| obscure(adjective, cover, dark, unknown, hidden) |
| personal(adjective, cover, obscure, dark, equivocal) |
| strange(obscure, unknown, clandestine, underground, unrevealed) |
| unexposed(obscure, dark, secret, unknown, hidden) |