| perplexing(adjective, hard, fancy, obscure, rough) |
| enigmatic(adjective, hard, knowledge, evil, obscure) |
| mysterious(adjective, hard, knowledge, evil, obscure) |
| baffling(adjective, difficult, strange, mysterious, complicated) |
| mystifying(adjective, hard, knowledge, evil, obscure) |
| obscure(adjective, dark, strange, uncertain, complex) |
| confusing(adjective, hard, false, uncertain, awkward) |
| abstruse(adjective, hard, fancy, evil, obscure) |
| ambiguous(adjective, obscure, dark, uncertain, vague) |
| incomprehensible(adjective, obscure, dark, strange, mysterious) |
| cryptic(adjective, knowledge, evil, obscure, difficult) |
| unclear(adjective, obscure, uncertain, vague, ambiguous) |
| bewildering(adjective, hard, obscure, false, awkward) |
| curious(adjective, extraordinary, unusual, strange, exceptional) |
| intricate(adjective, hard, fancy, evil, obscure) |
| complex(adjective, hard, fancy, difficult, heavy) |
| confounding(adjective, hard, false, tricky, ambiguous) |
| difficult(adjective, hard, fancy, obscure, strange) |
| uncertain(dark, vague, unclear, tricky, ambiguous) |
| unfathomable(adjective, obscure, dark, strange, sophisticated) |