The crossword solution for the term 'language related to Hindi' is 'Urdu', which is a four-letter word. Urdu is an Indo-Aryan language spoken mainly in Pakistan and India. It is closely related to Hindi, and is written in the Perso-Arabic script. Urdu is the national language of Pakistan, and is also one of the 22 official languages of India. It is also spoken in other parts of South Asia, as well as by diaspora communities around the world.