Sylheti or Syloti ( Sileṭi or Silôṭi) is an Eastern Indo-Aryan language variety, primarily spoken in the Sylhet Division of Bangladesh and the Barak Valley region of southern Assam. It was originally a form of Hindustani vernacular, but over the years it gravitated towards standard Bengali to be considered as a dialect of the Bengali language. Despite incomplete mutual intelligibility, it shares a high proportion of vocabulary with Standard Bengali: Chalmers (1996) reports at least 80% overlap.