Echo:
(also, less commonly: ‘echoer’ & ‘echoist’; plural: ‘echoes‘; pronunciation: the letters ‘ch’ are pronounced with a ‘k’ sound as in the word “king” — for the right pronunciation, please click here)

an echo (imitating a bird’s call)
a person (or thing) that copies or repeats others’ opinions, clothes, speech, etc.;
a copycat;
a person who accepts others’ opinions without objection,
When the young politician realised that he was being an echo of his senior, he stopped following his senior’s speeches and tactics and started developing his own.
Being an echo to somebody is nothing more than being a slave; one must have one’s own thoughts and the strength to express those thoughts.
To save their jobs and income, most staff members tend to be echoes and oblige whatever the bosses say.
Some political pundits are in the opinion that most people in the former Soviet Republic were just echoes who did not express their real feeling freely for fear of being persecuted by the then socialist government, just like it’s happening in China now!

an echo (a killer whale finding a fish with echolocation)
