Gossip hoarder
One who collects gossip for the purpose of having gossip and who doesn't use it for anything else.
Gossip hoarder: A person who overhears gossip but doesnt reveal said gossip they just keep it to themselves.
E.g. A johnny tight lips character
A hush
A person who listens but doesn't tell
A collector of private information
E.g. A johnny tight lips character
A hush
A person who listens but doesn't tell
A collector of private information