| caliginous(adjective, dull, dark, gloomy, dim) |
| characterless(adjective, dull, stupid, boring, tedious) |
| chestnut(adjective, dark, bay, buff, brown) |
| chippy |
| clouded(adjective, dull, lead, dark, gloomy) |
| commonplace(adjective, dull, hard, simple, plain) |
| depressed(adjective, dull, blue, sad, unhappy) |
| despondent(adjective, dull, blue, sad, unhappy) |
| dirty(adjective, dark, gloomy, soiled, misty) |
| earthbound(adjective, dull, excite) |
| fille de joie(expression, idiom, libertine) |
| floozy |
| frowzy(adjective, plain, shabby, dingy, unfashionable) |
| fuscous |
| grungy(adjective, dull, colorless) |
| ho-hum(adjective, dull, simple, flat, clean) |
| irksome(adjective, dull, simple, clean, plain) |
| jejune(adjective, dull, weak, boring, dead) |
| lustreless |
| mat |