What is another word for chatterbox?
Pronunciation: [t͡ʃˈatəbˌɒks] (IPA) 
Chatterbox is a popular word used to refer to a person who talks a lot or excessively. There are various synonyms for the word chatterbox, including blabbermouth, jabberer, prattler, motormouth, and gabber. Blabbermouth refers to someone who reveals secrets or talks too much. A jabberer is someone who chatters nonsensically or speaks rapidly and incessantly. A prattler is someone who talks excessively about unimportant or trivial matters. Motormouth and gabber both refer to someone who talks at a fast pace and never seems to stop. Each of these synonyms has a slightly different connotation, but all can be used interchangeably with chatterbox.
