SESTET is a playable word

sestet Scrabble® Dictionary

noun
pl. sestets
a stanza of six lines
26 Playable Words can be made from "SESTET"
   2-Letter Words (3 found)
   3-Letter Words (7 found)
   4-Letter Words (10 found)
   5-Letter Words (3 found)
   6-Letter Words (3 found)