| enigmatical(adjective, hard, obscure, delicate, solid) |
| fantastic(adjective, happy, tender, perfect, superior) |
| haunted(adjective, extraordinary, unusual, wonderful, marvelous) |
| hyperphysical(superior, outstanding, amazing, best, chosen) |
| illegible(adjective, unintelligible) |
| involved(adjective, hard, obscure, complex, tricky) |
| murky |
| odd(adjective, unusual, strange, peculiar, unexpected) |
| private(adjective, obscure, secret, reticent, unknown) |
| problematic |
| psychic(adjective, obscure, deep, rational, intellectual) |
| psychical(adjective, rational, intellectual, supernatural, mental) |
| secluded(adjective, obscure, dark, secret, unknown) |
| secretive(adjective, strange, secret, private, reticent) |
| shady(unusual, strange, uncertain, doubtful, dubious) |
| sibylline(solid, dark, uncertain, dense, unfathomable) |
| spectral(adjective, extraordinary, unusual, wonderful, marvelous) |
| subtle(adjective, hard, obscure, delicate, deep) |
| supernormal(superior, outstanding, amazing, best, chosen) |
| superphysical(superior, outstanding, amazing, best, chosen) |