FLATMATE is a playable word

flatmate Scrabble® Dictionary

noun
pl. flatmates
one with whom an apartment is shared
97 Playable Words can be made from "FLATMATE"
   2-Letter Words (16 found)
   3-Letter Words (30 found)
   5-Letter Words (9 found)
   6-Letter Words (4 found)
   8-Letter Words (1 found)