ECHOER is a playable word

echoer Scrabble® Dictionary

noun
pl. echoers
one that echoes
39 Playable Words can be made from "ECHOER"
   2-Letter Words (8 found)
   3-Letter Words (14 found)
   4-Letter Words (9 found)
   5-Letter Words (4 found)
   6-Letter Words (4 found)