| featureless(adjective, continuous) |
| final(adjective, absolute, positive) |
| flatcar |
| floor(noun, level, story, bottom, deck) |
| habitation(noun, place, house, home, box) |
| hollow(noun, adjective, dull, deep, space) |
| inactive(adjective, dull, quiet, slow, heavy) |
| inane(adjective, dull, stupid, lackluster) |
| indubitable(adjective, absolute, positive, categorical) |
| joint(noun, place, informal, base, house) |
| lusterless(adjective, light, excite) |
| monotone(adjective, dull, dark, gloomy, ordinary) |
| muddy(adjective, dark, cloudy, colors) |
| quarters(noun, territory, place, base, range) |
| residence(noun, place, base, house, home) |
| roost(noun, place, base, house, home) |
| run-of-the-mill(adjective, dull, set, silly, common) |
| short(adjective, low) |
| steady(adjective, calm, quiet, strong, smooth) |
| still(adjective, dull, quiet, soft, gentle) |