SIXTHS is a playable word

sixth Scrabble® Dictionary

noun
pl. sixths
one of six equal parts
26 Playable Words can be made from "SIXTHS"
   2-Letter Words (7 found)
   3-Letter Words (9 found)
   4-Letter Words (6 found)
   5-Letter Words (3 found)
   6-Letter Words (1 found)