|Glottolog||nort3172 (Northeast Sabahan)|
sout3154 (Southwest Sabahan)
The constituents are separated into two families in Blust (2010):
- Northeast Sabahan
- Southwest Sabahan
Lobel (2013b, p. 47, 361) proposes the following internal classification of Southwest Sabahan, based on phonological and morphological evidence.
Lobel (2013:367–368) lists the following Proto-Southwest Sabahan phonological innovations that were developed from Proto-Malayo-Polynesian. (Note: PSWSAB stands for Proto-Southwest Sabahan, while PMP stands for Proto-Malayo-Polynesian.)
- PMP *h > PSWSAB Ø
- PMP *a > PSWSAB *ə / _# (possibly be an areal feature in Sabah or northern Borneo, since this is also found in Idaanic)
- PMP *R > PSWSAB *h / (a,i,u)_(a,ə,u)
- PMP *R > PSWSAB *g / ə_
- PMP *-m- > ø in PSWSAB reflexes of the PMP pronoun forms *kami ‘1EXCL.NOM’, *mami ‘1EXCL.GEN’, and *kamu ‘2PL.NOM’
- Reduction of most PMP consonant clusters to either singletons or prenasalized clusters
- North Sarawak
- Northeast Sabah (Bonggi, Idaanic)
- Southwest Sabah
- Greater Dusunic
- Greater Murutic
- Lobel (2013), pp. 36–68 harvp error: no target: CITEREFLobel2013 (help)
- Smith, Alexander (2017). The Languages of Borneo: A Comprehensive Classification (PDF) (Ph.D. dissertation). University of Hawai‘i at Mānoa.
- Adelaar, K. Alexander; Himmelmann, Nikolaus, eds. (2005). The Austronesian Languages of Asia and Madagascar. Oxon, UK: Routledge.
- King, Julie K.; King, John Wayne, eds. (2015). Languages of Sabah: A Survey Report. Pacific Linguistics, Series C – No. 78. Canberra: Research School of Pacific Studies, Australian National University. doi:10.15144/PL-C78.
- Lobel, Jason William (2013a). Philippine and North Bornean Languages: Issues in Description, Subgrouping, and Reconstruction (PDF) (Ph.D. dissertation). University of Hawai'i at Manoa.
- Lobel, Jason William (2013b). "Southwest Sabah Revisited". Oceanic Linguistics. 52 (1): 36–68. doi:10.1353/ol.2013.0013.