Abahatta is a stage in the evolution of the Eastern group of Indo-Aryan languages such as Bangla, Maithili, Oriya. Abahatta is considered to follow the Apabhramsha stage, i.e. those Apabhramsha's derived from Magadhi Prakrits, and is also sometimes called Purvi Apabhramsha. The Indo-Aryan languages form a subgroup of the Indo-Iranian languages, thus belonging to the Indo-European family of languages. ... This article is about the Bengali language. ... Maithili is of the family of Indo-Aryan languages, which are part of the Indo-Iranian branch of the Indo-European languages. ... Oriya is the official language of the Indian state of Orissa. ... The term Apabhramsha refers to the dialects of North India before the rise of modern North Indian languages. ... The Magadhi language (also known as Magahi) is a language of India. ... Prakrit (Sanskrit prākṛta प्राकृत (from pra-kṛti प्रकृति), original, natural, artless, normal, ordinary, usual, i. ...

Abahatta which existed from the 6th c. to 14th c. AD, was co-temporaneous with some Apabhramsa languages as well as the early Modern languages such as Old Bangla or Maithili. Many poets composed both in Abahatta and a modern language, e.g. Bangla Charyapada poets wrote dohas or short religious verses in abahatta; the Maithili poet Vidyapati wrote his autobiography Kirtilata in abahatta. The Apabhramsa language was the next modification in the spoken language of North India after Prakrit, in a period broadly lasting from the 5th to the 10th century. ... Maithili is of the family of Indo-Aryan languages, which are part of the Indo-Iranian branch of the Indo-European languages. ... Vidyapati (1352? – 1448?) was born in the village of Bisapi, Madhubani district, Bihar state, India. ...

The Abahatta stage is characterized by the loss of affixes and suffixes, loss of grammatical gender, increased usage of short vowels, nasalisation at the end or in the middle of words, the substitution of h for s, etc.

For the Bengali language, the Abahatta stage was followed by the Old Bangla (ca. 1100 AD).