SUPREMER is a playable word

supreme Scrabble® Dictionary

noun
pl. supremes
a smooth white sauce made with chicken stock
adjective
supremer, supremest
highest in power or authority
119 Playable Words can be made from "SUPREMER"
   2-Letter Words (10 found)
   3-Letter Words (28 found)
   6-Letter Words (7 found)
   7-Letter Words (4 found)
   8-Letter Words (2 found)