chatterbox

noun chatterbox

• blabbermouth — a person who talks too much or indiscreetly
• windbag — Informal. an empty, voluble, pretentious talker.
• clack — If things clack or if you clack them, they make a short loud noise, especially when they hit each other.
• gossip — idle talk or rumor, especially about the personal or private affairs of others: the endless gossip about Hollywood stars.
• busybody — If you refer to someone as a busybody, you are criticizing the way they interfere in other people's affairs.