Where does “native tongue” come from?

native tongue (English) comes from English Native, from Middle English natif, from Old French natif, from Latin nātīvus, from Latin nātus, from Latin gnātus, from Proto-Italic gnātos, from Proto-Indo-European ǵn̥h₁tós — to produce, to beget, to give birth.

Ancestry of “native tongue”, step by step

native tongue traces back through two separate lines of ancestry.

via English Native

StepLanguageWordMeaning
1EnglishNativeaboriginal inhabitant of a region colonized by...
2Middle Englishnatif
3Old Frenchnatif
4Latinnātīvuscreated, made
5Latinnātusborn, arisen, made
6Latingnātus
7Proto-Italicgnātosborn
8Proto-Indo-Europeanǵn̥h₁tósbegotten, produced
9Proto-Indo-Europeanǵenh₁-to produce, to beget, to give birth

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
Every word from Proto-Indo-European ǵenh₁-Every word from Proto-Indo-European ǵn̥h₁tósEvery word from Proto-Italic gnātos