TACHYON is a playable word

tachyon Scrabble® Dictionary

noun
pl. tachyons
a theoretical subatomic particle
83 Playable Words can be made from "TACHYON"
   2-Letter Words (15 found)
   3-Letter Words (31 found)
   5-Letter Words (13 found)
   6-Letter Words (2 found)
   7-Letter Words (1 found)