| delicate(adjective, dull, bad, light, weak) |
| subdued(adjective, dull, quiet, weak, soft) |
| tarnish(verb, dull, reduce, diminish, lower) |
| muddy(verb, adjective, dull, reduce, diminish) |
| shadowy(adjective, dull, weak, soft, gentle) |
| discolor(verb, dull, dirty, corrupt, stain) |
| imperceptible(adjective, dull, weak, soft, gentle) |
| lose color(verb, expression, idiom, dull, reduce) |
| quiet(adjective, dull, weak, soft, gentle) |
| darken(verb, dull, reduce, lower, dirty) |
| decolorize(verb, dull, dissolve, white) |
| low(adjective, dull, quiet, weak, soft) |
| wash out(verb, expression, dull, dissolve) |
| achromatize(verb, dull, dissolve, lighten) |
| discolored(beat, white, exhausted, distressed) |
| lose luster(verb, expression, idiom, dull, reduce) |
| muted(adjective, dull, quiet, light, weak) |
| tone down(verb, expression, dull, dissolve) |
| bated(adjective, dull, weak, soft, gentle) |
| become colorless(verb, expression, dull, dissolve) |