echo chamber

American  

[ek-oh cheym-ber] / ˈɛk oʊ ˌtʃeɪm bər /

noun

1. a room or other enclosed space that amplifies and reflects sound, generally used for broadcasting or recording echos or hollow sound effects: The hallway is a giant echo chamber.

   an open-air echo chamber;

   The hallway is a giant echo chamber.

2. an environment in which the same opinions are repeatedly voiced and promoted, so that people are not exposed to opposing views: We need to move beyond the echo chamber of our network to understand diverse perspectives.

   an online echo chamber;

   We need to move beyond the echo chamber of our network to understand diverse perspectives.

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echo chamber British  

noun

1. Also called: reverberation chamber.  a room with walls that reflect sound. It is used to make acoustic measurements and as a source of reverberant sound to be mixed with direct sound for recording or broadcasting

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Etymology

Origin of echo chamber

An Americanism dating back to 1935–40

Example Sentences

See Examples For:

echo chamber

It is used to gauge opinion outside of the referees' own echo chamber, and away from the headlines.

From BBC ● May 11, 2026

“This echo chamber was used to deceive you.”

From Slate ● Apr. 1, 2026

The effect, they say, was to create an echo chamber: When both a trusted financial adviser and a lawyer repeated the same message, it reinforced Puech’s belief in what he was being told.

From The Wall Street Journal ● Oct. 18, 2025

If a teen wants to be tapped into the digital echo chamber, they have to know what it can do to them.

From Salon ● Mar. 18, 2025

His brain still felt like an echo chamber: Alternate worlds.

From "The Strangers" by Margaret Peterson Haddix