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

“This echo chamber was used to deceive you.”

From Slate • Apr. 1, 2026

More specifically, here are some of the tactics I use so that I don’t live in an AI echo chamber:

From The Wall Street Journal • Mar. 21, 2026

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

Mia, who has exchanged messages with moderators on the website, describes the site as an "echo chamber" which can "push people over the edge".

From BBC • Feb. 5, 2025

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

From "The Strangers" by Margaret Peterson Haddix