| compound(noun, adjective, hard, mixed, simple) |
| complex(noun, adjective, hard, mixed, simple) |
| mixture(noun, cross, combination, complex, mix) |
| intricate(adjective, hard, difficult, complex) |
| complicated(adjective, hard, difficult, complex) |
| mixed(adjective, mixed, union, mixture, unity) |
| difficult(adjective, hard, complex) |
| elaborate(adjective, hard, difficult, complex) |
| involute(adjective, hard, difficult, complex) |
| involved(adjective, hard, difficult, complex) |
| knotty(adjective, hard, difficult, complex) |
| multiple(adjective, hard, difficult, complex) |
| tricky(adjective, hard, difficult, complex) |
| blend(noun, verb, cross, combination, complex) |
| combination(noun, cross, combination, assemble, complex) |
| combined(adjective, mixed, union, different, compound) |
| miscellaneous(adjective, mixed, union, mixture, unity) |
| mix(noun, verb, cross, combination, complex) |
| amalgam(noun, cross, combination, mix, blend) |
| amalgamation(noun, cross, combination, mix, blend) |