népnyelvi
Népnyelvi is an adjective used in linguistics to refer to the vernacular language of a people, that is, the everyday speech used by ordinary speakers rather than formal or standardized varieties. The corresponding noun népnyelv denotes the language as such, including regional dialects, colloquialisms, slang, and features preserved in oral tradition.
In practice, népnyelvi describes linguistic phenomena associated with non-standard speech and its contexts. This includes phonetic
Népnyelvi research often involves collecting and examining authentic folk speech, oral narratives, proverbs, and everyday discourse
See also: dialectology, sociolinguistics, folklore studies, ethnography, language variation.