echo

Definition

Echo is the repetition of sound caused by the reflection of sound waves from a surface.

Echo is like when you shout into a canyon and hear your voice come back to you. It happens because sound waves bounce off of the walls of the canyon and come back to you.

How can the word be used?

The sound of the waves echoed off the cliffs.

Different forms of the word

Noun: echo, reverberation, reflection.

Verb: to echo, resound, reverberate.

Adjective: echoic.

Adverb: echoically.

Synonym: reecho, repeat, reiterate.

Antonym: silence.

Etymology

The word "echo" comes from the Greek word ēkho, which means "sound" or "reverberation". It is made up of the two Greek words ēk (sound) and o (to send forth).

Question

Where is it easy to produce an echo?