noun
common knowledge; widely known
Used to describe something that is known throughout society or by everyone. Often appears in formal or written contexts.
その事実は世間周知のものとなっている。
That fact has become common knowledge.
彼の不正は世間周知の事実だ。
His misconduct is a widely known fact.
Compound of 世間 (society, the world) and 周知 (common knowledge). The exact historical derivation is uncertain, but the word is a straightforward combination of these two elements.