SUPERBER is a playable word

superb Scrabble® Dictionary

adjective
superber, superbest
of excellent quality
(adverb) superbly
109 Playable Words can be made from "SUPERBER"
   2-Letter Words (7 found)
   3-Letter Words (29 found)
   6-Letter Words (6 found)
   7-Letter Words (2 found)
   8-Letter Words (1 found)