ISOSTASIES is a playable word

isostasy Scrabble® Dictionary

noun
pl. isostasies
the state of balance in the earth's crust
125 Playable Words can be made from "ISOSTASIES"
   2-Letter Words (17 found)
   3-Letter Words (30 found)
   7-Letter Words (5 found)
   8-Letter Words (2 found)
   10-Letter Words (1 found)