Rumor (noun)

1. A story or statement in circulation without confirmation or certainty of fact.
2. A piece of information of uncertain origin or authenticity, passed from one person to another.
3. A commonly circulated belief or supposition about something.
4. A baseless or groundless report or belief.
5. A piece of gossip or unverified information.

Origin:

From the old french word 'rumour' meaning 'noise, fuss'.

Examples:

1. There was a rumor going around that he was going to resign.
2. The rumors about her affair with the movie star were never confirmed.
3. The rumors of a merger between the two companies were circulating in the market.
4. The rumor of a ghost haunting the house turned out to be false.
5. She heard a rumor that her friend was getting married.