GREYEST is a playable word

grey Scrabble® Dictionary

adjective
greyer, greyest
gray
verb
greyed, greying, greys
to gray
91 Playable Words can be made from "GREYEST"
   2-Letter Words (6 found)
   3-Letter Words (24 found)
   6-Letter Words (4 found)
   7-Letter Words (1 found)