| weighty(adjective, feature, state, characteristic) |
| austere(adjective, feature, state, characteristic) |
| complex(adjective, feature, state, characteristic) |
| compound(adjective, feature, state, characteristic) |
| cruel(adjective, feature, state, characteristic) |
| elaborate(adjective, feature, state, characteristic) |
| grave(adjective, feature, state, characteristic) |
| harsh(adjective, feature, state, characteristic) |
| intense(adjective, feature, state, characteristic) |
| involved(adjective, feature, state, characteristic) |
| labyrinthine(adjective, feature, state, characteristic) |
| problematic(adjective, feature, state, characteristic) |
| rigid(adjective, feature, state, characteristic) |
| serious(adjective, feature, state, characteristic) |
| sore(adjective, feature, state, characteristic) |
| stern(adjective, feature, state, characteristic) |
| strict(adjective, feature, state, characteristic) |
| thorny(adjective, feature, state, characteristic) |
| tricky(adjective, feature, state, characteristic) |
| troublesome(adjective, feature, state, characteristic) |