ULTISOLS is a playable word

ultisol Scrabble® Dictionary

noun
pl. ultisols
a reddish-yellow acid soil
93 Playable Words can be made from "ULTISOLS"
   2-Letter Words (12 found)
   3-Letter Words (18 found)
   6-Letter Words (3 found)
   7-Letter Words (1 found)
   8-Letter Words (1 found)