The South HalmaheraâÂÂWest New Guinea (SHWNG) languages are a branch of the Malayo-Polynesian languages, found in the islands and along the shores of the Halmahera Sea in the Indonesian province of North Maluku and of Cenderawasih Bay in the provinces of Papua and West Papua. There are 38 languages.
The unity of the South HalmaheraâÂÂWest New Guinea subgroup is well supported by lexical and phonological evidence. Blust (1978) has proposed that they are most closely related to the Oceanic languages, but this classification is not universally accepted.
Most of the languages are only known from short word lists, but Buli, Patani and Taba on Halmahera, Ambel on Raja Ampat, and Biak, Wamesa, Wooi, and Waropen in Cenderawasih Bay, are fairly well attested.
Traditionally, the languages are classified into two geographic groups:
The unity of the South Halmahera and Raja Ampat languages is supported by phonological changes noted in Blust (1978) and Remijsen (2002). This results in the following structure:
David Kamholz (2014) includes these languages as additional branches:
The following language groups are problematic â they may or may not be SHWNG. Kamholz (2014) does not classify them due to lack of data. Grimes & Edwards include them with the Kei–Tanimbar languages, and Kamholz (2024) does not list them as part of SHWNG.
Although the Kowiai language is considered part of SHWNG in Blust's Austronesian Comparative Dictionary, it is not listed as such by Kamholz (2024). Grimes & Edwards include Kowiai within the Seram Laut group.
The SHWNG languages can be categorized as follows (Kamholz 2014: 136-141, Kamholz 2024: 183):
Kamholz (2014) presumes the homeland of proto-SHWNG to be the southern coast of the Cenderawasih Bay, around 3,500 years ago.
Kamholz (2024) revises the tree shown above, separating Ambel-Biga into two primary branches of RASH.
At least six SHWNG languages, namely Ma'ya, Matbat, Ambel, Moor, Yaur, and Yerisiam, are tonal. Klamer, et al. (2008) suggest that tone in these SHWNG languages originated from contact with Papuan languages of the Raja Ampat Islands that are now extinct. There are few lexical similarities with present-day Papuan languages, except for a few words such as 'sago' that are shared with the two tonal Papuan isolates Abun and Mpur (both spoken on the north coast of the Bird's Head Peninsula):
However, Arnold (2018) traces this etymology to Proto-Malayo-Polynesian *Rambia 'sago palm'.
Arnold (2018) reconstructs tone for Proto-Ma'ya-Matbat and Proto-Ambel, but not for Proto-SHWNG. Other than tonogenesis, these proto-languages had also gone through monosyllabization through apocope.
The VRK Mutation is characteristic of most SHWNG languages (except for the RASH languages), where the phonemes , , and surface as the prenasalized voiced stops , , and in various cluster environments. The mutation is found in the Ambai, Ansus, Biak, Busami, Dusner, Kurudu, Marau, Meoswar, Moor, Munggui, Papuma, Pom, Roon, Roswar (possibly equivalent to Meoswar), Serewen (possibly a dialect of Pom), Serui-Laut, Umar, Wamesa, Warembori, Waropen, Wooi, Yaur, Yerisiam, and Yoke languages.
Kamholz notes that SHWNG languages have relatively low lexical retention rates from Proto-Malayo-Polynesian, pointing to significant influence from non-Austronesian Papuan languages.
Reconstruction of subject markers and inalienable possessive markers for Proto-South HalmaheraâÂÂWest New Guinea according to Kamholz (2015). Note that V = vocalic conjugation, C = consonantal conjugation:
Reconstruction of lexemes found in Proto-South HalmaheraâÂÂWest New Guinea according to Arnold (2025).
Reconstruction of innovative lexemes found in Proto-South HalmaheraâÂÂWest New Guinea according to Kamholz (2024).
Reconstruction of numerals in Proto-South HalmaheraâÂÂWest New Guinea according to Barlow (2022).