The repetition of other people’s words or sounds is echolalia. When the toddler you babysit repeats everything you say, over and over again, you can call it “annoying,” or you can call it echolalia..

I looked this up because a friend would keep repeating what I said, what I said. I did not know why, know why…..

Apparently it’s something to do with psychiatric disorders or autism. I would not say my friend suffered from either of these. Perhaps it was a habit? I don’t know. It was incredibly annoying until I realised it was normal for my friend and learned to accept it.