STIMMING is a playable word

stim Scrabble® Dictionary

verb
stimmed, stimming, stims
to repeat an action or movement of the body many times
58 Playable Words can be made from "STIMMING"
   2-Letter Words (8 found)
   3-Letter Words (17 found)
   4-Letter Words (18 found)
   5-Letter Words (7 found)
   6-Letter Words (4 found)
   7-Letter Words (3 found)
   8-Letter Words (1 found)