| discolored(white, pallid, ashen) |
| dullness(noun, grayness) |
| dusk(noun, adjective, dull, dark, gloomy) |
| foggy(adjective, obscure, dark, gloomy, cloudy) |
| geriatric(tired, mature, age, aged, older) |
| ghastly(adjective, dull, light, soft, poor) |
| glum(adjective, sorrow, depress, sadness, emotion) |
| grim(adjective, sorrow, depress, sadness, emotion) |
| grizzle |
| iron-gray |
| leadenness(noun, grayness) |
| lurid(adjective, dull, light, soft, poor) |
| obscure(verb, adjective, dull, cover, confuse) |
| shadow(verb, cover, obscure, confuse, dark) |
| steely(adjective, dull, leaden) |
| tenebrous(adjective, dark, sorrow, gloomy, depress) |
| washed-out(adjective, dull, light, soft, poor) |
| waxen(adjective, dull, light, soft, poor) |
| salt-and-pepper(adjective, body) |
| Asa Gray |