"grayer" 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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