| mystifying(adjective, hard, delicate, complex, tricky) |
| numinous(obscure, dark, superior, mysterious, supernatural) |
| obfuscated(adjective, obscure) |
| occult(adjective, obscure, dark, superior, uncertain) |
| odd(adjective, strange, incompatible, unfathomable, puzzling) |
| peculiar(adjective, strange, unfathomable, puzzling) |
| recondite(adjective, obscure, dark, uncertain, mysterious) |
| scrambled |
| strange(adjective, obscure, deep, odd, unknown) |
| thick |
| turbid(adjective, obscure) |
| twisted(adjective, strange, fantastic, irregular, improper) |
| unapparent |
| uncoordinated(adjective, strange, fantastic, detached, irregular) |
| undisclosed(obscure, unknown, clandestine, underground, concealment) |
| undiscoverable(adjective, hidden, unfathomable, incomprehensible, enigmatic) |
| ungraspable(adjective, solid, deep, dense, incoherent) |
| unknown(obscure, dark, superior, mysterious, heavenly) |
| unseen(obscure, unknown, clandestine, underground, undisclosed) |
| unsettled(adjective, unclear, indistinct, indistinguishable) |