SYMBIOTS is a playable word

symbiot Scrabble® Dictionary

noun
pl. symbiots
symbiont
104 Playable Words can be made from "SYMBIOTS"
   2-Letter Words (17 found)
   3-Letter Words (32 found)
   6-Letter Words (2 found)
   7-Letter Words (1 found)
   8-Letter Words (1 found)