| achromatic(adjective, distressed, worn, colorless, stonewashed) |
| ashy(adjective, pale, white, colorless) |
| dingy(adjective, dull, dark, gloomy, faint) |
| dry(adjective, dull, simple, flat, excite) |
| faint(adjective, dull, mean, weak, thin) |
| leaden(adjective, dull, lifeless) |
| muddy |
| muted(adjective, dull, dark, gloomy, faint) |
| obscure(adjective, dull, dim, lifeless) |
| pallid(adjective, mean, weak, thin, ill) |
| somber(adjective, blue, sad, depression, woe) |
| spiritless(adjective, dull, excite, sad, boring) |
| tedious(adjective, dull, simple, flat, plain) |
| toneless(adjective, colorless) |
| unimaginative(adjective, dull, simple, excite, plain) |
| wan(mean, weak, thin, ill, feeble) |
| blah(adjective, dull, simple, flat, low) |
| blind(adjective, dull, lifeless) |
| expressionless |
| gloomy(adjective, dull, blue, sad, dark) |