OPPOSERS is a playable word

opposer Scrabble® Dictionary

noun
pl. opposers
one that opposes
105 Playable Words can be made from "OPPOSERS"
   2-Letter Words (10 found)
   3-Letter Words (22 found)
   6-Letter Words (10 found)
   7-Letter Words (4 found)
   8-Letter Words (2 found)