GRUMBLY is a playable word

grumbly Scrabble® Dictionary

adjective
grumblier, grumbliest
given to grumbling
38 Playable Words can be made from "GRUMBLY"
   2-Letter Words (4 found)
   3-Letter Words (17 found)
   4-Letter Words (11 found)
   5-Letter Words (4 found)
   6-Letter Words (1 found)
   7-Letter Words (1 found)