1. chatterer, babbler, prater, chatterbox, magpie, spouter, speaker, talker, utterer, verbalizer, verbaliser

usage: an obnoxious and foolish and loquacious talker

2. babbler, cackler, oscine, oscine bird

usage: any of various insectivorous Old World birds with a loud incessant song; in some classifications considered members of the family Muscicapidae

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See also: babbler (Dictionary)