| sluggish(adjective, calm, increase, weak, flat) |
| bland(adjective, quiet, weak, kind, soft) |
| dry(adjective, calm, hard, simple, tough) |
| dumb(verb, adjective, calm, quiet, simple) |
| dark(adjective, characteristic, unhappy, gloomy, dirty) |
| dense(adjective, simple, slow, dark, gloomy) |
| dismal(adjective, upset, obscure, unhappy, dark) |
| heavy(adjective, upset, quiet, severe, warm) |
| numb(noun, verb, adjective, quiet, develop) |
| stolid(noun, adjective, calm, simple, tough) |
| torpid(adjective, quiet, flat, low, sad) |
| deaden(verb, action, calm, quiet, develop) |
| inactive(adjective, action, quiet, low, slow) |
| thick(adjective, simple, obscure, warm, slow) |
| vapid(adjective, boring, uninteresting, flat, tedious) |
| dingy(adjective, characteristic, flat, dark, gloomy) |
| doltish(adjective, simple, slow, careless, foolish) |
| leaden(adjective, quiet, severe, flat, slow) |
| soul-crushing |
| commonplace(noun, adjective, set, hard, simple) |