Wasei-eigo term derived from English 'echo room', referring to an environment where a person only encounters opinions that reinforce their own, often used in the context of social media or online communities.
wasei-eigo (Japanese-coined English), from echo room
See also: エコーチェンバー
Social media can easily become an echo chamber.
It's hard to break out of an echo chamber where only the same opinions gather.
Variant spelling with a middle dot, also used.
Wasei-eigo from English 'echo' + 'room', likely modeled on 'echo chamber'.