Bodo (बर') is a Sino-Tibetan language spoken primarily by the Bodo people of Northeast India. It is official language of the Bodoland autonomous region and co-official language of the state of Assam in India. It is also one of twenty two languages listed in the Eighth Schedule of the Constitution of India. The Bodo language has been written using Devanagari script since 1963. Some scholar believe that at ancient time boro language were written in Deodhai script which is now lost.

History and linguistic classification
Bodo is a Sino-Tibetan language of the Bodo group. It is closely related to the Dimasa language and Tiwa (Lalung) Language of Assam. It is also related to the Garo language of Meghalaya and the Kokborok language of Tripura. The Bodo speaking areas of Assam stretch from Dhubri in the west to Sadiya in the east. In Alipurduar, Cooch Behar and Jalpaiguri and other parts of Bengal, the Boros are known as "Mech". According to the 1991 census, the population of Boro speakers was 1,984,569 (Bodo 1,324,748), (Mech 659,821). The census reports of Bodo tribe, however, includes only the Bodos. It excludes the Mech tribe. The word "Boro" means the language and the community. It is pronounced with a high tone on the second syllable.

Dialects 
The dialects spoken in this area can be divided into three main groups:

The Western Boro dialect, {(Sønabari) WBD}:
The Eastern Boro dialect, {(Sanzari) EBD} and
The Southern Boro dialect, {(Hazari) SBD}.

The Western Boro dialects are spoken in the districts of Kokrajhar and Bongaigaon. The Eastern Bodo dialects are found mainly in the districts of Barpeta, Nalbari and Kamrup and some parts of Darrang. The Western Boro dialect has gained the status of a standard dialect. It has also developed a written form. The variations between these two dialect groups are mainly phonological and lexical.
 
The Bodo language of Assam has at least four clear-cut dialect-areas with a sufficient number of dialectal variations. There are the northeastern, southwestern, north-central and southern dialect areas. Each has distinct differences.

Geographic distribution
Ethnologue lists the following districts where Bodo is spoken. Bodo is spoken mainly in the lowlands and foothills of Assam and West Bengal.

Assam
Darrang district
Nagaon district
Kamrup district
Goalpara district
Sibsagar district
Lakhimpur district
West Bengal
Kolkata
Jalpaiguri district
Cooch Behar district
Manipur
Chandel district (in Tengnoupal)
Meghalaya
7 villages in Tikrikilla block of West Garo Hills district
East Khasi Hills district

History 
Although the Bodo language is a rich and ancient language, it did not have any written literature until the second decade of the 20th century. Christian missionaries, who entered the Bodo speaking areas to preach their religion, published some books on religion, tales, rhymes and songs. These missionaries also published some books on grammar and dictionary. Reverend Sidney Endle compiled An Outline of the Kachari Grammar in 1884. The grammar is based on the dialect of Darrang district. Endle also wrote an important book on the Bodos. It is titled The Kacharis. The book was published in 1911 and it contains chapters on social customs, agriculture practices, festivities, food habits, rituals, crafts and textiles of the Bodos. The book also included examples of Bodo folktales, rhymes and grammars. J.D. Anderson's Collection of Bodo Folktales and Rhymes (1895) included seventeen Bodo folktales translated into the English language. This is in addition to the original versions in the Bodo language.

In 1963 the language was used in teaching in the primary schools in Bodo dominated areas. The Bodo language is used in schools up to the secondary level. The language has become a matter of pride with the opening of the post-graduate course in the Bodo language. Bodo literature has been used in the University of Guwahati since 1996. The Bodo language now has a large number of books of poetry, drama, short stories, novels, biography, travel, children's literature and literary criticism. Though the spoken language has been affected by other communities and dialects, it is still to be heard in its pure form in and around the Udalguri district.

Writing system 
The language is officially written using the Devanagari script. It also has a long history of using the Latin script and the Assamese script.  Some researchers have suggested that at one time the language used a now-lost script called Deodhai.

Related pages 
Bodo people
Bodo Grammar
Bodo Sahitya Sabha
Kokborok language

References

Other websites 

Abley, Mark (2006) The Verbs of Boro , Lost Magazine , March 2006
Bodoland.org
Boro Language
Bodo computing resources at TDIL 
Language Information Service – India 

Languages of India
Sino-Tibetan languages