MOSSES is a playable word

moss Scrabble® Dictionary

verb
mossed, mossing, mosses
to cover with moss (a growth of small, leafy-stemmed plants)
24 Playable Words can be made from "MOSSES"
   2-Letter Words (8 found)
   3-Letter Words (9 found)
   4-Letter Words (6 found)
   6-Letter Words (1 found)