| thaumaturgic(adjective, unusual, wonderful, marvelous, charming) |
| top-secret(clandestine, underground, undisclosed) |
| top secret(expression, clandestine, underground, undisclosed) |
| tough nut to crack(noun, expression, idiom, question, secret) |
| tranced(adjective, extraordinary, unusual, wonderful, marvelous) |
| undecipherable |
| under cover(expression, obscure, dark, unseen) |
| under wraps(expression, clandestine, underground, undisclosed) |
| undisclosed(obscure, dark, unknown, hidden, imperceptible) |
| unintelligible(adjective, obscure, dark, superior, uncertain) |
| unspoken |
| unusual(adjective, obscure, dark, extraordinary, superior) |
| unuttered |
| unworldly(adjective, sensitive, intellectual, supernatural, mental) |
| veil(verb, cover, block, hide, store) |
| witching(noun, adjective, unusual, wonderful, marvelous) |
| witchlike(adjective, extraordinary, unusual, wonderful, marvelous) |
| wizardly(adjective, extraordinary, unusual, wonderful, marvelous) |
| clairvoyant(adjective, extraordinary, unusual, wonderful, marvelous) |
| Delphian(adjective, evil, obscure, dark, uncertain) |