| complex(adjective, hard, fancy, difficult, involved) |
| Byzantine(adjective, hard, fancy, obscure, difficult) |
| Daedalian(adjective, unmethodical, caught, multiplex, daedal) |
| complicated(adjective, obscure, difficult, complex, sophisticated) |
| convoluted(adjective, hard, fancy, obscure, difficult) |
| daedal(adjective, caught, multiplex, gordian) |
| intricate(adjective, hard, fancy, obscure, difficult) |
| knotty(adjective, hard, fancy, obscure, difficult) |
| labyrinthine(adjective, hard, fancy, obscure, difficult) |
| Daedalic |
| Gordian(adjective, hard, fancy, obscure, difficult) |
| abstruse(adjective, hard, fancy, obscure, difficult) |
| arduous(adjective, hard, fancy, difficult, complex) |
| can of worms(expression, adjective, idiom, hard, fancy) |
| difficult(adjective, hard, fancy, complex, involved) |
| elaborate(adjective, hard, fancy, difficult, complex) |
| entangled(adjective, hard, fancy, obscure, difficult) |
| fancy(adjective, hard, difficult, complex, intricate) |
| gasser(adjective, hard, fancy, difficult, complex) |
| hard(adjective, fancy, difficult, complex, intricate) |