CASEINS is a playable word

casein Scrabble® Dictionary

noun
pl. caseins
a milk protein
(adjective) caseic
88 Playable Words can be made from "CASEINS"
   2-Letter Words (11 found)
   3-Letter Words (23 found)
   6-Letter Words (7 found)
   7-Letter Words (3 found)