MULLED is a playable word

mull Scrabble® Dictionary

verb
mulled, mulling, mulls
to ponder
32 Playable Words can be made from "MULLED"
   2-Letter Words (7 found)
   3-Letter Words (14 found)
   4-Letter Words (9 found)
   5-Letter Words (1 found)
   6-Letter Words (1 found)