|Greater North Borneo|
|most of Borneo|
parts of Sumatra, Java and Mainland Southeast Asia
The Greater North Borneo languages are a proposed subgroup of the Austronesian language family. The subgroup covers languages that are spoken throughout much of Borneo (excluding the southeastern area where the Greater Barito languages are spoken), as well as parts of Sumatra, Java, and Mainland Southeast Asia. The Greater North Borneo hypothesis was first proposed by Robert Blust (2010) and further elaborated by Alexander Smith (2017a, 2017b). The evidence presented for this proposal are solely lexical.
The proposed subgroup covers some of the major languages in Southeast Asia, including Malay (Malaysian and Indonesian) and related Malayic languages such as Minangkabau, Banjar and Iban; as well as Sundanese and Acehnese. In Borneo itself, the largest non-Malayic GNB language in terms of the number of speakers is Central Dusun, mainly spoken in Sabah.
Blust connects the GNB expansion with the migration of Austronesian speakers into the Maritime Southeast Asia. According to Blust, when Austronesian speakers came from the north through the Philippines, they split into three groups: one that went into Borneo, one that went into Sulawesi, and one that went into the Moluccas. After landed on Borneo, the first group was further split into two: one that moved along the northwestern coast facing the South China Sea, and another one that moved along the eastern coast. The language variety spoken by the northwestern group eventually developed into Greater North Borneo languages.
Robert Blust proposed a set of lexical innovations that defined Greater North Borneo. One of these innovations is *tuzuq replacing Proto-Malayo-Polynesian *pitu for 'seven'. The following subgroups are included:
While Blust assumed that all languages of Borneo other than those in Greater Barito subgroup with GNB, he doesn't attempt to explicitly classify several languages, including those with insufficient available data.
Smith recognizes an independent Central Sarawak branch within Greater North Borneo, combining the Melanau, Kajang and Punan-Müller-Schwaner languages. Additionally, he also excludes Moklenic from GNB and places it all the way up as one of the primary branches of Malayo-Polynesian.
Proto-Kayanic, Proto-Punan, Proto-Müller-Schwaner, Proto-Land Dayak, and Proto-Kenyah have also been reconstructed in Smith (2017a).