MOSSING is a playable word

moss Scrabble® Dictionary

verb
mossed, mossing, mosses
to cover with moss (a growth of small, leafy-stemmed plants)
70 Playable Words can be made from "MOSSING"
   2-Letter Words (13 found)
   3-Letter Words (25 found)
   5-Letter Words (7 found)
   6-Letter Words (2 found)
   7-Letter Words (1 found)