MUMBLING is a playable word

mumbling Scrabble® Dictionary

noun
pl. mumblings
the act of speaking unclearly
65 Playable Words can be made from "MUMBLING"
   2-Letter Words (10 found)
   3-Letter Words (30 found)
   4-Letter Words (14 found)
   5-Letter Words (4 found)
   6-Letter Words (4 found)
   7-Letter Words (2 found)
   8-Letter Words (1 found)