BRETHREN is a playable word

brother Scrabble® Dictionary

noun
pl. brothers or brethren
a male sibling
verb
brothered, brothering, brothers
to treat like a brother
65 Playable Words can be made from "BRETHREN"
   2-Letter Words (9 found)
   3-Letter Words (21 found)
   5-Letter Words (11 found)
   6-Letter Words (3 found)
   8-Letter Words (1 found)