UNBOLTS is a playable word

unbolt Scrabble® Dictionary

verb
unbolted, unbolting, unbolts
to open by withdrawing a bolt (a metal bar)
98 Playable Words can be made from "UNBOLTS"
   2-Letter Words (11 found)
   3-Letter Words (28 found)
   6-Letter Words (4 found)
   7-Letter Words (1 found)