| furtive(adjective, obscure, strange, secret, private) |
| indecipherable(adjective, obscure, dark, uncertain, incomprehensible) |
| indefinite(strange, uncertain, doubtful, dubious, unidentified) |
| funny(adjective, unusual, strange, odd, peculiar) |
| insoluble(adjective, secret, concealed) |
| intricate(adjective, hard, evil, obscure, heavy) |
| latent(obscure, dark, secret, unknown, hidden) |
| metaphysical(adjective, superior, outstanding, amazing, best) |
| peculiar(adjective, unusual, strange, odd, striking) |
| spiritual(adjective, strange, rational, intellectual, secret) |
| undisclosed(obscure, dark, secret, unknown, hidden) |
| undiscovered(strange, new, remote, indefinite, unidentified) |
| unexplored(strange, new, remote, unknown, indefinite) |
| unusual(adjective, extraordinary, strange, wonderful, marvelous) |
| confused(adjective, uncertain, unintelligibility) |
| bewildering(adjective, hard, tricky, complicated, puzzling) |
| complex(adjective, hard, obscure, delicate, complex) |
| doubtful(dark, unusual, strange, uncertain, dubious) |
| dubious(unusual, strange, uncertain, doubtful, odd) |
| extraordinary(adjective, superior, unusual, strange, wonderful) |