A diglossia is a language that has two forms, where one is regarded as prestigious and associated with the language of law and government, etc, and the other form is a colloquial vernacular form that is widely used but less prestigious.
UsingEnglish.com is partnering with Gymglish to give you a free one-month trial of this
excellent online English training course. Activate your free month of lessons (special offer for new
users, with no obligation to buy) - and receive a level assessment!