rumor mill
A process in which a group or network of persons originate or promulgate gossip and other unsubstantiated claims.
For months the Washington rumor mill has ground out gossip about who might replace U.S. Ambassador Frederick E. Nolting Jr.
noun
A statement or claim of questionable accuracy, from no known reliable source, usually spread by word of mouth.
There's a rumor going round that he's going to get married.
vile rumor
Information or misinformation of the kind contained in such claims.
They say he used to be a thief, but that's just rumor.
Report, news, information in general.
It stands a city aloof. There hath been no rumour of it—I alone have dreamed of it, and I may not be sure that my dreams are true.
Fame, reputation.
Clamor, din, outcry.
verb
To tell a rumor about; to gossip.
John is rumored to be next in line for a promotion.