"greyer" in the adjective sense

1. grey, gray, greyish, grayish

of an achromatic color of any lightness intermediate between the extremes of white and black

"the little grey cells"

"gray flannel suit"

"a man with greyish hair"

2. grey, gray, grey-haired, gray-haired, grey-headed, gray-headed, grizzly, hoar, hoary, white-haired

showing characteristics of age, especially having grey or white hair

"whose beard with age is hoar"-Coleridge

"nodded his hoary head"

3. grey, gray

used to signify the Confederate forces in the American Civil War (who wore grey uniforms

"a stalwart grey figure"

4. grey, gray

intermediate in character or position

"a grey area between clearly legal and strictly illegal"

Source: WordNet® (An amazing lexical database of English)

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