The Nepalese caste system is the traditional system of social stratification of Nepal. The Nepalese caste system broadly borrows the classical Hindu Chaturvarnashram model, consisting of four broad social classes or varna: Brahmin, Kshatriya, Vaishya, Sudra.
The caste system defines social classes by a number of hierarchical endogamous groups often termed jaat. This custom was traditionally only prevalent in the three Indo Aryan societies of the Khas, Madhesi, and Newars. However, since the unification of Nepal in the 18th century, Nepal's various non-Hindu ethnic nationalities and tribes, previously called "Matwalis" (alcohol-drinkers) and now termed as "Adivasi/Janajati" (indigenous/nationalities), have been incorporated within the caste hierarchy to varying degrees of success. Despite the forceful integration by the state into the pan-Hindu social structure, the traditionally non-Hindu groups and tribes do not necessarily adhere to the customs and practices of the caste system.[1]
The Government of Nepal legally abolished and criminalized any caste-based discrimination, including "untouchability" (the ostracism of a specific caste) - in 1963.[2] With Nepal's step towards freedom and equality, Nepal, previously ruled by a Hindu monarchy, was a Hindu nation which has now become a secular state.[3] On 28 May 2008, it was declared a republic,[4] ending the period of the Hindu kingdom.[5]