noun
old news; stale news; yesterday's news
Refers to news or information that is no longer fresh or relevant. Often used in contrast to 新 (new) or 最新 (latest).
その話はもう旧聞に属する。
That story is already old news.
新聞に載った時には、その事件はすでに旧聞となっていた。
By the time it appeared in the newspaper, the incident had already become stale news.