ANECHOIC is a playable word

anechoic Scrabble® Dictionary

adjective
neither having nor producing echoes
109 Playable Words can be made from "ANECHOIC"
   2-Letter Words (18 found)
   3-Letter Words (27 found)
   6-Letter Words (8 found)
   7-Letter Words (6 found)
   8-Letter Words (1 found)