| prosaic(adjective, characteristic, harshness, roughness) |
| racking(adjective, characteristic, harshness, roughness) |
| repetitious(adjective, characteristic, harshness, roughness) |
| restless(adjective, characteristic, harshness, roughness) |
| rigorous(adjective, characteristic, harshness, roughness) |
| rough(adjective, characteristic, harshness, roughness) |
| routine(adjective, characteristic, harshness, roughness) |
| spiritless(adjective, characteristic, harshness, roughness) |
| stale(adjective, characteristic, harshness, roughness) |
| stereotyped(adjective, characteristic, harshness, roughness) |
| stiff(adjective, characteristic, harshness, roughness) |
| stodgy(adjective, characteristic, harshness, roughness) |
| stuffy(adjective, characteristic, harshness, roughness) |
| stupid(adjective, characteristic, harshness, roughness) |
| tame(adjective, characteristic, harshness, roughness) |
| taxing(adjective, characteristic, harshness, roughness) |
| tedious(adjective, characteristic, harshness, roughness) |
| threadbare(adjective, characteristic, harshness, roughness) |
| tireless(adjective, characteristic, harshness, roughness) |
| tiresome(adjective, characteristic, harshness, roughness) |