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

Ensconced in an echo chamber, we run the risk of being the last to learn when something is amiss.

From The Wall Street Journal ● Jun. 11, 2026

I realised he'd only ever said stuff like that in his own echo chamber.

From BBC ● Mar. 7, 2026

Rarely is the ridiculous performance revealed to their own echo chamber.

From Salon ● Aug. 4, 2025

Lost in his own pillow-strewn echo chamber, Lindell surrounded himself with people who would take his money and tell him what he wanted to hear.

From Slate ● Jun. 25, 2025

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

From "The Strangers" by Margaret Peterson Haddix