'assamite' originates from the English place name 'Assam' combined with the suffix '-ite', where '-ite' meant 'native of, follower of' (a common English agent/demonym suffix).

'assamite' was formed in modern English by attaching the suffix '-ite' to 'Assam' (the region name, itself borrowed into English), producing the noun 'assamite' to denote an inhabitant; later the form was also adopted in fiction to name a clan/group.

Initially, it meant 'a person from Assam'; over time it has retained that meaning but also acquired a secondary, fictional sense referring to members of a named group in literature and games.