Bodo (��') or Boro 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.