PROTEI is a playable word

proteus Scrabble® Dictionary

noun
pl. proteuses
one that readily changes appearance or principles
noun
pl. protei
any of a genus of aerobic bacteria
65 Playable Words can be made from "PROTEI"
   2-Letter Words (14 found)
   3-Letter Words (23 found)
   5-Letter Words (4 found)
   6-Letter Words (1 found)