| mythical(obscure, dark, superior, mysterious, supernatural) |
| mythological(obscure, dark, superior, mysterious, supernatural) |
| nonsensical |
| not understandable |
| out of keeping(expression, adjective, idiom, strange, fantastic) |
| paranormal(obscure, dark, mysterious, supernatural, heavenly) |
| past comprehension |
| phantom(obscure, dark, superior, mysterious, supernatural) |
| phenomenal(obscure, dark, superior, mysterious, supernatural) |
| problematic(vague, unclear, ambiguous, misleading, indistinct) |
| problematical(adjective, hard, obscure, delicate, complex) |
| profound(hard, delicate, complex, deep, tricky) |
| prolix |
| psychic(obscure, dark, mysterious, supernatural, heavenly) |
| questionable(uncertain, vague, unclear, ambiguous, misleading) |
| rare(obscure, dark, superior, mysterious, supernatural) |
| reticent(obscure, deep, unknown, clandestine, underground) |
| roundabout |
| shapeless(adjective, obscure) |
| shifting(adjective, strange, fantastic, irregular, improper) |