CRUMBLIEST is a playable word

crumbly Scrabble® Dictionary

adjective
crumblier, crumbliest
easily crumbled
691 Playable Words can be made from "CRUMBLIEST"
   2-Letter Words (20 found)
   3-Letter Words (86 found)
   9-Letter Words (1 found)
   10-Letter Words (1 found)