| close(obscure, dark, secret, unknown, hidden) |
| fine(adjective, exact, discriminating) |
| hermetic(adjective, obscure, dark, deep, mysterious) |
| knotty(adjective, hard, fancy, evil, obscure) |
| latent(adjective, obscure, dark, secret, unknown) |
| opaque |
| pedantic(adjective, sound, obscure, complex, knowledgeable) |
| remote(new, unknown, untried) |
| scholarly(adjective, obscure, complex, deep, rational) |
| transcendental(strange, intellectual, abstract, theoretical, abstruse) |
| unfamiliar(adjective, strange, new, different, unknown) |
| unknown(obscure, dark, new, deep, secret) |
| ambiguous(obscure, dark, uncertain, mysterious, unknown) |
| clandestine(adjective, secret, unknown, hidden, underground) |
| cryptical |
| secluded(adjective, obscure, dark, secret, unknown) |
| undecipherable |
| veiled(adjective, obscure, mysterious, secret, hidden) |
| weighty(deep, thoughtful, reflective) |
| Byzantine(adjective, hard, fancy, obscure, difficult) |