EXCLUDER is a playable word

excluder Scrabble® Dictionary

noun
pl. excluders
one that excludes
97 Playable Words can be made from "EXCLUDER"
   2-Letter Words (7 found)
   3-Letter Words (26 found)
   6-Letter Words (6 found)
   7-Letter Words (2 found)
   8-Letter Words (1 found)