Purari is also known as Koriki, Evorra, I'ai, Maipua, and Namau. "Namau" is a colonial term which means "deaf (lit.), inattentive, or stupid (Williams 1924: 4)." Today people of the Purari Delta find this term offensive. F.E. Williams reports that the "[a]n interpreter suggests that by some misunderstanding the name had its origin in the despair of an early missionary, who, finding the natives turned a deaf ear to his teaching, dubbed them all 'Namau'." (Williams 1924: 4). Koriki, I'ai, and Maipua refer to self-defining groups that make up the six groups that today compose the people who speak Purari. Along with the Baroi (formerly known as the Evorra, which was the name of a village site), Kaimari and the Vaimuru, these groups speak mutually intelligible dialects of Purari.
^ abPawley, Andrew; Hammarström, Harald (2018). "The Trans New Guinea family". In Palmer, Bill (ed.). The Languages and Linguistics of the New Guinea Area: A Comprehensive Guide. The World of Linguistics. 4. Berlin: De Gruyter Mouton. pp. 21–196. ISBN978-3-11-028642-7.