common knowledge

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common knowledge

noun

  1. uncountable That which is known by most people, and thus cannot reasonably be contested. A limited liability company is not subtle, Mrs Straithwaite. This one knows that you have insured a five-thousand-pound pearl necklace with it, and when it becomes a matter of common knowledge that you have had one answering to that description stolen, it jumps to the conclusion that they are one an
  2. uncountable A special kind of knowledge for a group of agents, such that when all the agents in a group G know p, they all know that they know p, they all know that they all know that they know p, and so on ad infinitum.

Translations

Every language

noun that which is known by most people

Españolsaber popular, conocimiento general, dominio público
中文常識 /常识 chángshí
Françaisde notoriété publique
DeutschAllgemeinwissen, Allgemeinbildung
Ελληνικάκοινή γνώση koiní gnósi
Românăcultură generală
Русскийвсем известный факт vsem izvestnyj fakt

noun special kind of knowledge for a group of agents

中文共同知識 /共同知识 gòngtóng zhīshi
Françaisconnaissance commune
Deutschgemeinsames Wissen, gemeinsames Vorwissen
Italianoconoscenza comune
Ελληνικάκοινή γνώση koiní gnósi

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MLA

"common knowledge." Wiktionary, via Micwyn, micwyn.com/word/common%20knowledge. Accessed 6 Nov. 2026.

APA

common knowledge. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/common%20knowledge

Chicago

"common knowledge." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/common%20knowledge.

BibTeX
@misc{common_knowledge_2026,
  title = {common knowledge},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/common%20knowledge},
  urldate = {2026-11-06}
}