| glowering(adjective, evil, mysterious, threatening, nefarious) |
| glum(adjective, evil, mysterious, threatening, nefarious) |
| hellish(adjective, evil, mysterious, threatening, nefarious) |
| horrible(adjective, evil, mysterious, threatening, nefarious) |
| imaginary(supernatural, spiritual, mystical, nonrational) |
| immoral(adjective, evil, mysterious, threatening, nefarious) |
| infamous(adjective, evil, mysterious, threatening, nefarious) |
| infernal(adjective, evil, mysterious, threatening, nefarious) |
| intricate(adjective, evil, deep, mysterious, hidden) |
| knotty(adjective, evil, deep, mysterious, hidden) |
| metaphoric |
| mystifying(adjective, evil, deep, mysterious, hidden) |
| nasty(adjective, evil, mysterious, threatening, nefarious) |
| necromantic(supernatural, spiritual, mystical) |
| nefarious(adjective, evil, mysterious, threatening, spooky) |
| not known(expression, adjective, evil, deep, mysterious) |
| parabolic |
| puzzling(adjective, evil, deep, mysterious, hidden) |
| recondite(adjective, evil, deep, mysterious, hidden) |
| satanic(adjective, evil, mysterious, threatening, nefarious) |