Central Bengali[1] or Raṛhi Bengali (রাঢ়ী বাংলা) is a dialect of the Bengali language spoken in the southeastern part of West Bengal, in and around the Bhagirathi River basin of Nadia district[2] and other districts of the Presidency division in West Bengal, as well as the undivided Kushtia district region of western Bangladesh.

Associated with the upper Delta and eastern Rarh region of Bengal, it forms the basis of the standard variety of Bengali.

[3][4][5][6][7] This dialect is prevalent in Central Bengal specifically in the West Bengal districts of Kolkata, North 24 Parganas, Nadia, Howrah, Hooghly, and Purba Bardhaman.

[8] Ôbhishruti (অভিশ্রুতি, /obʱisrut̪i/) and Ôpinihiti (অপিনিহিতি, /opinihit̪i/, epenthesis) are two phonological phenomena that occur in spoken Bengali dialects.

Opinihiti refers to the phonological process in which a ই or উ is pronounced before it occurs in the word.