Where does “blabtongue” come from?

blabtongue (English) comes from English tongue, from Middle English tung, from Old English tung, from Proto-West Germanic tungā, from Proto-Germanic tungǭ, from Proto-Indo-European dn̥ǵʰwéh₂s — tongue.

blabtongue (English): An informant

Definitions

  1. An informant

Ancestry of “blabtongue”, step by step

blabtongue traces back through two separate lines of ancestry.

via English tongue

StepLanguageWordMeaning
1EnglishtongueThe flexible muscular organ in the mouth that is...
2Middle Englishtungtongue; A tongue-shaped thing; language, speech,...
3Old Englishtung
4Proto-West Germanictungātongue; speech, language
5Proto-Germanictungǭtongue; speech, language
6Proto-Indo-Europeandn̥ǵʰwéh₂stongue

via English blab

StepLanguageWordMeaning
1EnglishblabTo tell tales; to gossip without reserve or...
2Middle Englishblabbento talk foolishly
3Middle Englishblabbeidle talk; talebearer
Every word from Proto-Indo-European dn̥ǵʰwéh₂sEvery word from Proto-Germanic tungǭEvery word from Proto-West Germanic tungā