Where does “blabbermouth” come from?

blabbermouth (English) comes from English mouth, from Middle English mouþ, from Old English mūþ, from Proto-West Germanic *munþ, from Proto-Germanic munþaz, from Proto-Indo-European men- — to think, mind; spiritual activity; to stay,...

blabbermouth (English): A gossip; A person who talks excessively; A kind...

Definitions

  1. A gossip; A person who talks excessively; A kind...

Ancestry of “blabbermouth”, step by step

blabbermouth traces back through two separate lines of ancestry.

via English mouth

StepLanguageWordMeaning
1EnglishmouthThe opening of a creature through which food is...
2Middle EnglishmouþAlternative form of mouth
3Old Englishmūþmouth, opening, door, gate
4Proto-West Germanic*munþmouth
5Proto-Germanicmunþazmouth
6Proto-Indo-Europeanmen-to think, mind; spiritual activity; to stay,...

via English blabber

StepLanguageWordMeaning
1EnglishblabberTo blather; to talk foolishly or incoherently; To...
2Middle Englishblaberento blabber, babble
Every word from Proto-Indo-European men-Every word from Proto-Germanic munþazEvery word from Proto-West Germanic *munþ