SUBSHAFTS is a playable word

subshaft Scrabble® Dictionary

noun
pl. subshafts
a shaft that is beneath another shaft
116 Playable Words can be made from "SUBSHAFTS"
   2-Letter Words (12 found)
   3-Letter Words (32 found)
   6-Letter Words (4 found)
   7-Letter Words (1 found)
   8-Letter Words (1 found)
   9-Letter Words (1 found)