GRUMPIER is a playable word

grumpy Scrabble® Dictionary

adjective
grumpier, grumpiest
ill-tempered
(adverb) grumpily
88 Playable Words can be made from "GRUMPIER"
   2-Letter Words (11 found)
   3-Letter Words (32 found)
   5-Letter Words (13 found)
   6-Letter Words (6 found)
   7-Letter Words (1 found)
   8-Letter Words (1 found)