STIBIAL is a playable word

stibial Scrabble® Dictionary

adjective
pertaining to stibium
99 Playable Words can be made from "STIBIAL"
   2-Letter Words (14 found)
   3-Letter Words (29 found)
   5-Letter Words (13 found)
   6-Letter Words (5 found)
   7-Letter Words (1 found)