QUARTET is a playable word

quartet Scrabble® Dictionary

noun
pl. quartets
a group of four
55 Playable Words can be made from "QUARTET"
   2-Letter Words (9 found)
   3-Letter Words (24 found)
   4-Letter Words (10 found)
   5-Letter Words (8 found)
   6-Letter Words (3 found)
   7-Letter Words (1 found)