RUMBLER is a playable word

rumbler Scrabble® Dictionary

noun
pl. rumblers
one that rumbles
53 Playable Words can be made from "RUMBLER"
   2-Letter Words (8 found)
   3-Letter Words (16 found)
   4-Letter Words (14 found)
   5-Letter Words (11 found)
   6-Letter Words (3 found)
   7-Letter Words (1 found)