Is “Greying” a Scrabble word?
Yes
GREYING
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Greying
verb
1.To become grey.
“My hair is beginning to grey.”
2.To cause to become grey.
3.To turn progressively older, in the context of the population of a geographic region.
“the greying of Europe”