TEAMMATE is a playable word

teammate Scrabble® Dictionary

noun
pl. teammates
a member of the same team
47 Playable Words can be made from "TEAMMATE"
   2-Letter Words (11 found)
   3-Letter Words (17 found)
   4-Letter Words (14 found)
   5-Letter Words (3 found)
   6-Letter Words (1 found)
   8-Letter Words (1 found)