common knowledge

1. 1.

   anything generally known to everyone

   Broaderpublic knowledge

   Narrowerancient history

Questions about common knowledge

What does common knowledge mean?

common knowledge means "anything generally known to everyone".

Is common knowledge a common word?

common knowledge is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.