SUBBASS is a playable word

subbass Scrabble® Dictionary

noun
pl. subbasses
a pedal stop producing the lowest tones of an organ
25 Playable Words can be made from "SUBBASS"
   2-Letter Words (4 found)
   3-Letter Words (9 found)
   4-Letter Words (9 found)
   5-Letter Words (2 found)
   7-Letter Words (1 found)