BALLASTS is a playable word

ballast Scrabble® Dictionary

verb
ballasted, ballasting, ballasts
to stabilize
95 Playable Words can be made from "BALLASTS"
   2-Letter Words (8 found)
   3-Letter Words (23 found)
   6-Letter Words (8 found)
   7-Letter Words (2 found)
   8-Letter Words (1 found)