Rumour/ˈruːmər/ Definition 1 of 1Pro Tip 1/3Unverified Information Rumours are unproven. They may be true or false, but lack concrete evidence. Despite the rumour about the haunted house, no ghosts were ever seen. Pro Tip 2/3Spreading Fast Rumours can spread quickly and can change as people talk, like a game of 'telephone'. The rumour about the celebrity breakup went viral overnight. Pro Tip 3/3Potential Harm Rumours can be harmful or damaging to people's reputations if they are believed. The unfounded rumour about his dishonesty cost him several friends.