Inherent Language - Native language 2.0
Inherent language is one or more languages spoken by an individual that are seen as part of their identity and come to mind first, depending on context and conversational partner.
This term goes beyond concepts such as mother tongue, native language, first language, second language, foreign language etc. it helps especially polyglot individuals recognize all their languages as part of themselves.
Speakers are able to hold conversations about various topics, and are able to substitute missing vocabulary in order to explain precisely what they mean.
Inherent language is a type of “acquired inheritance” that speakers feel “at home” in it. It is something they own and is part of them at the same time. It is inherent.