| misty(adjective, dull, quiet, clear, light) |
| dense(adjective, dull, simple, slow, dark) |
| half-assed |
| shady(adjective, dull, cool, obscure, dark) |
| blurry(adjective, dull, clear, obscure, vague) |
| obtuse(adjective, dull, simple, slow, foolish) |
| slow(adjective, dull, quiet, simple, diminish) |
| stupid(adjective, dull, simple, slow, intelligent) |
| blur(noun, verb, dull, cover, clear) |
| somber(adjective, dull, soft, blue, obscure) |
| dingy(adjective, dull, soft, obscure, flat) |
| dreary(adjective, dull, blue, obscure, sad) |
| ill-defined(adjective, dull, weak, soft, gentle) |
| overcast(verb, adjective, dull, cover, clear) |
| becloud(verb, cover, clear, reduce, lower) |
| muddy(verb, adjective, dull, cover, reduce) |
| opaque(adjective, dull, light, simple, soft) |
| tenebrous(adjective, dull, obscure, rough, dark) |
| clouded(adjective, dull, obscure, dark, gloomy) |
| feeble(adjective, dull, light, weak, soft) |