i Register
In some senses, chatterbox is marked as informal. Watch for register when choosing this word.
noun
One who chats or talks to excess.
[S]he [Edwina, mother of Tennessee Williams] was indeed Amanda [Wingfield, character in Williams' play The Glass Menagerie] in the flesh: a doughty chatterbox from Ohio who adopted the manner of a Southern belle and eschewed both drink and sex to the greatest extent possible.
Synonym of cootie catcher (“children's fortune-telling device”).
Synonym of chatterbot.
The orchid Epipactis gigantea.