Oxford dictionary: casual or unconstrained conversation or reports about other people, typically involving details that are not confirmed as being true.

Cambridge dictionary: conversation or reports about other people's private lives that might be unkind, disapproving, or not true:

Miriam Webster: a person who habitually reveals personal or sensational facts about others

Collins dictionary: Gossip is informal conversation, often about other people's private affairs.

Britannica; information about the behavior and personal lives of other people

About a decade ago, some fuckhead came up with the idea that gossip wasn't bad, and that it served a good purpose. It was in the news all over the world.

Gossip means spreading bad stuff about other people, and it also is about sharing private information about other people.

There is no such thing as good gossip. The word is misunderstood.