Chalita Bhasa colloquial or spoken Bangla. In Bangla prose two forms of language are used: chalita or colloquial and sadhu or 'chaste'. Standard language was the form used for Bangla prose till the third decade of the 19th century, when bhabanicharan bandyopadhyay first used colloquial language. The colloquial Bangla evolved over time particularly from the writings of peary chand mitra and kali prasanna singh. Colloquial Bangla received literary acceptance and saw its full growth in pramatha chowdhury's sabujpatra. It has progressed further and has greatly influenced modern writings. It has now become the language of literature and the media. One of the last Bangladeshi papers to give up the sadhu form was ittefaq, which has also started using the colloquial form since 2001.
Colloquial Bangla is based on the language spoken by the people of Nadia, West Bengal. Its verbs and pronouns are very close to spoken expressions and are shorter than in sadhu bhasa. For example: সে চলিয়া গেল (se chaliya gela, He went); সে চলে গেল (se chale gela, He went); তাহাদিগকে (tahadigake, to them); তাদের (tader, to them). Chaste language is formal, whereas colloquial language is comparatively easy and informal. Colloquial language is now generally used in both formal and informal writings. [Mohammad Daniul Huq]