This community is fairly homogeneous and exclusive, with members required to draw from both parents' separate clans.

They are a part of the greater Bodo-Kachari family of ethnolinguistic groups of Northeast India which includes Boro, Tripuri, Rabha, Garo, Tiwa, Koch, Moran etc.

It stands for Di-ma-sa meaning sons of big waters[7] referring to Brahmaputra river (known as Dilao in Dimasa).

After long wandering, they settled at Di-laobra Sangibra, the confluence of the Brahmaputra and Sangi or Di-tsang, where they held a great assembly.

Kailash Kumar Chhetri (Ecological Significance of the Traditional Beliefs and Practices of Dimasa Kaschari Tribe, 2001) has also written while mentioning the Dimasai life system.

This social system has its own culture, tradition, and religious beliefs and practices, which are related to the land and nature of their residence.

Hence, it is clear that Dimasa Kachari also gives an important place in their Dharmic structure to the twelve Daikhos present in their entire region along with various abstract states.

Dimasa is agglutinative, forming words through processes such as prefixation, suffixation, compounding, reduplication, and onomatopoeia.

It has a rich phonological system with six vowels and sixteen consonants and uses both Latin and Eastern Nagari scripts for writing.

As of the 2011 census, there are approximately 137,184 native speakers of Dimasa, though the language is considered vulnerable due to limited use outside the home environment.