Abahaṭṭha, Abahatta or Avahaṭṭha (Sanskrit apabhraṣṭa 'corrupted',[1] related to apabhraṃśa) is a stage in the evolution of the Eastern group of the Indo-Aryan languages.
This group consists of languages such as Assamese, Bengali, Bhojpuri,[2] Magahi, Maithili, and Odia.
After different business and trading classes, including the Jains, rose in power and influence at the end of the ninth century CE, the widespread speaking of classical Sanskrit waned.
Apabhransa and Abahatta thus became very popular, especially amongst common people, functioning as a lingua franca throughout the north of the Indian subcontinent.
Many works authored in Abahatta were translated into Sanskrit, while other texts were also written using multiple languages, such as Somprabha's Kumarpala-pratibodha in 1195.