Is “Grainiest” a Scrabble word?
Yes
GRAINIEST
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 Grainiest
adjective
1.Resembling grains; granular.
2.Coarsely ground or gritty.