patois

nouns

a characteristic language of a particular group (as among thieves)
"they don't speak our lingo"
argot, cant, jargon, lingo, patois, slang, vernacular
a regional dialect of a language (especially French); usually considered substandard
patois
domain usage
the Romance language spoken in France and in countries colonized by France
French
is a type of (narrower)
the usage or vocabulary that is characteristic of a specific group of people
"the immigrants spoke an odd dialect of English"; "he has a strong German accent"; "it has been said that a language is a dialect with an army and navy"
accent, dialect, idiom