SOBERER is a playable word

sober Scrabble® Dictionary

adjective
soberer, soberest
having control of one's faculties
verb
sobered, sobering, sobers
to make sober
68 Playable Words can be made from "SOBERER"
   2-Letter Words (9 found)
   3-Letter Words (22 found)
   5-Letter Words (11 found)
   6-Letter Words (4 found)
   7-Letter Words (2 found)