Chalita Bhasa colloquial or spoken Bangla. In Bangla prose two forms of language are used: chalita or colloquial and sadhu or 'chaste'. Chaste language was the form used for Bangla writing till the third decade of the 19th century, when bhabanicharan bandyopadhyay first used colloquial language. The further evolution of colloquial Bangla took place in 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 in 1914. It has progressed further and has greatly influenced modern writings. It has 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: োস চিলয়া োগল (se chaliya gela, He went) > োস চেল োগল (se chale gela, He went); তাহািদগেক (tahadigake, to them) > তােদর (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 writing. [Mohammad Daniul Huq]