common knowledge

what everybody knows or is aware of

An inquiry into that case showed that the head's activities had probably been common knowledge among the staff for years. BNCI

By this afternoon, the events of last night, or Dennis's lurid version of them, would be common knowledge on the racing gossip circuit. BNCI

It was common knowledge that Blackburn were in for me, and there were also rumours about Arsenal. BNCI

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