Chatterboxes are people who talk a lot. They can be referred to as yakkers, talkers, magpies, or yappers. Yakkers are people who talk incessantly and often about trivial matters. Talkers are people who talk a lot, but not necessarily about trivial matters. Magpies are people who talk a lot and often repeat themselves. Yappers are people who talk a lot and often in a loud voice. All of these terms refer to people who talk a lot and are considered chatterboxes.