A rumor or hearsay — information heard from others that has not been confirmed.
それは風聞に過ぎないから、鵜呑みにしないでください。
That's just hearsay, so don't take it at face value.
市場では風聞が飛び交っているが、公式発表はまだない。
Rumors are circulating in the market, but there's no official announcement yet.
風聞によれば、彼は来月会社を辞めるらしい。
According to rumor, he is apparently quitting the company next month.