| preternatural(adjective, superior, unusual, outstanding, amazing) |
| uncertain(adjective, dark, uncertain, doubtful, vague) |
| unearthly(adjective, superior, strange, outstanding, amazing) |
| covert(adjective, quiet, strange, secret, hidden) |
| bizarre(adjective, happy, unusual, strange, odd) |
| romantic(adjective, happy, unusual, unknown, striking) |
| unexplainable(adjective, unfathomable, enigmatic, inexplicable, sphinx-like) |
| unintelligible(adjective, hard, obscure, solid, dark) |
| difficult(adjective, hard, obscure, strange, complex) |
| queer(adjective, unusual, strange, odd, peculiar) |
| transcendental(adjective, strange, secret, supernatural, heavenly) |
| unfamiliar(adjective, unusual, strange, new, remote) |
| miraculous(adjective, superior, unusual, wonderful, outstanding) |
| oracular(adjective, dark, strange, uncertain, doubtful) |
| questionable(adjective, unusual, strange, uncertain, doubtful) |
| unaccountable(adjective, obscure, solid, superior, marvelous) |
| unexplained(adjective, strange, new, remote, indefinite) |
| unidentified(adjective, strange, new, remote, secret) |
| unknowable(adjective, solid, strange, secret, dense) |
| cryptical |