Modern standard Hindi evolved from the interaction of early speakers of Khari Boli with Muslim invaders from Afghanistan, Iran, Turkey, Central Asia, and elsewhere. As the new immigrants settled and began to adjust to the Indian social environment, their languages—which were ultimately lost—enriched Khari Boli.

When did Hindi language originated?

Like other Indo-Aryan languages, Hindi is a direct descendant of an early form of Vedic Sanskrit, through Sauraseni Prakrit and Śauraseni Apabhraṃśa (from Sanskrit apabhraṃśa corrupt), which emerged in the 7th century CE.