| exacting(adjective, tough, rough, difficult, heavy) |
| extravagant(adjective, fancy, delicate, exact, complex) |
| formidable(adjective, hard, tough, severe, rough) |
| fussy(adjective, complete, fancy, difficult, exact) |
| harsh(adjective, hard, severe, rough, difficult) |
| incomprehensible(adjective, obscure, heavy, deep, doubtful) |
| meandering(hard, obscure, sophisticated, ambiguous, devious) |
| multidimensional(adjective, component, measurement, versatile, dimension) |
| ornamented(adjective, fancy, exact, complex, involved) |
| refined(adjective, fancy, delicate, exact, complex) |
| restrained(verb, hindered) |
| serpentine(complex, ambiguous, rambling, intricate, incidental) |
| strenuous(adjective, hard, tough, severe, rough) |
| wearing(adjective, tough, rough, difficult, heavy) |
| winding(adjective, obscure, complex, sophisticated, ambiguous) |
| Daedalean(adjective, obscure, difficult, complex, sophisticated) |
| accurate(exact, full, thorough, comprehensive, itemized) |
| advanced(complex, high-level) |
| arcane(adjective, evil, deep, doubtful, vague) |
| bewildering(adjective, hard, obscure, sophisticated, involved) |