echolalic
/ɛk.ˈoʊ.læ.lɪk/Definitions
1. adjective
relating to or resembling an echo; having a series of words or sounds repeated after the original
“The echolalic effect in the song created a dreamlike atmosphere.”
2. noun
a person who repeats words or sounds after the original speaker
“The echolalic stood in the corner, quietly repeating the words of the speaker.”