CRUMBIER is a playable word

crumby Scrabble® Dictionary

adjective
crumbier, crumbiest
full of crumbs
88 Playable Words can be made from "CRUMBIER"
   2-Letter Words (9 found)
   3-Letter Words (26 found)
   6-Letter Words (10 found)
   7-Letter Words (1 found)
   8-Letter Words (1 found)