| hue(noun, shade, colour, paint, tint) |
| maturity(noun, life, age, stage, seniority) |
| old age(expression, life, age, stage, seniority) |
| paint(noun, shade, colour, tint) |
| pigment(noun, shade, colour, paint, tint) |
| senility(noun, life, age, stage, seniority) |
| seniority(noun, life, age, stage) |
| shade(noun, colour, paint, tint) |
| tint(noun, shade, colour, paint) |
| achromatism(noun, quality, dullness, lifelessness, greyness) |
| attribute(noun, feature, characteristic, trait) |
| boringness(noun, quality, dullness, lifelessness, greyness) |
| cloudiness(noun, quality, dullness, lifelessness, greyness) |
| drabness(noun, quality, dullness, lifelessness, greyness) |
| dreariness(noun, quality, dullness, lifelessness, greyness) |
| feature(noun, characteristic, trait, attribute) |
| flatness(noun, quality, dullness, lifelessness, greyness) |
| flavorlessness(noun, quality, dullness, lifelessness, greyness) |
| gloom(noun, quality, dullness, lifelessness, greyness) |
| gloominess(noun, quality, dullness, lifelessness, greyness) |