SMOULDERING is a playable word

smoulder Scrabble® Dictionary

verb
smouldered, smouldering, smoulders
to smolder
1451 Playable Words can be made from "SMOULDERING"
   2-Letter Words (35 found)
   3-Letter Words (153 found)
   10-Letter Words (4 found)
   11-Letter Words (1 found)