Repetition of sound via reflection from a surface
Imitative reproduction, as of the style of another
One who mindlessly imitates another
To send back the sound of
To copy (another) slavishly
The only response was the echo of an unanswered ring.
He listened, but heard only the echo of his call.
Nothing to echo off of, she supposed.
His groan brought an echo from the depths of her soul and she pressed closer.
The echo of little voices inspired several snickers from around them.