Echoer is a term that refers to someone who repeats or imitates the words or actions of others. There are many synonyms for the word echoer, including copycat, parrot, imitator, mimic, mirror, and follower. Each of these words describes someone who lacks originality and simply imitates the behaviors of those around them. While this type of behavior may be annoying to some, it is often a way for people to fit in and feel connected to their peers. However, it is important to remember that creativity and individuality are valuable traits and should be encouraged.