SHUTOFF is a playable word

shutoff Scrabble® Dictionary

noun
pl. shutoffs
a device that shuts something off
51 Playable Words can be made from "SHUTOFF"
   2-Letter Words (10 found)
   3-Letter Words (14 found)
   4-Letter Words (18 found)
   5-Letter Words (8 found)
   7-Letter Words (1 found)