TETHERS is a playable word

tether Scrabble® Dictionary

verb
tethered, tethering, tethers
to fasten to a fixed object with a rope
75 Playable Words can be made from "TETHERS"
   2-Letter Words (8 found)
   3-Letter Words (18 found)
   6-Letter Words (8 found)
   7-Letter Words (1 found)