The Sadri of India are located in Bihar state: Aurangabad; Chhattisgarh state: Surguja; Jharkhand state: Chatra, Latehar, Palamu, and Ranchi districts.
The Sadri language is spoken by 12,131,225 in all countries, of which 12,130,000 are in India. There are about 5,130,000 ethnic Sadri in India (2011 census) with 4,350,000 speaking Sadri, 763,000 speaking Nagpuria, and 19,100 speaking Gawari.
Speakers name 3 registers of Sadri: Sadani (finer, respectful, formal), Common Sadri (Nagpuri), and Lower Sadri (rough). Lexical similarity with dialects and other languages include: 77%–96% between dialects, 58%–71% with Hindi [hin], 47%–54% with Odia [ory], 45%–61% with Bengali [ben]. Other names to refer to Sadri are Chota Nagpuri, Dikku Kaji, Ganwari, Gauuari, Gawari, Goari, Jharkhandhi, Nagpuri, Nagpuria, Sadan, Sadana, Sadani, Sadari, Sadati, Sadhan, Sadhari, Sadna, Sadrik, Santri, Siddri, and Sradri.
Sadri serves as a language of wider communication and as a trade language among ethnic groups in Assam, representing 7,000,000 people. In the Sadri region, literature and radio programs have been developed, using the Bengali and Devanagari scripts.
This dictionary is a preliminary version. There is still much work to do, but we have decided to publish this work-in-progress, in order to document the work that has been done so far.