Article published In: Journal of Historical Linguistics: Online-First Articles
Modeling sound change in a dialectically heterogeneous community
The case of Rhotacism in central Borneo
Published online: 2 March 2026
https://doi.org/10.1075/jhl.23014.smi
https://doi.org/10.1075/jhl.23014.smi
Abstract
Vertical and horizontal models of language relatedness, such as tree models and wave models, approach language change from two fundamentally different perspectives. Vertical models capture the diachronic nature of language differentiation but do not offer a satisfactory way to show diffusion across linguistic boundaries. Horizontal models excel at modeling diffusion but are essentially distributional models and have no temporal element. In this paper, a mixed model that incorporates both vertical and horizontal innovation spread is used to analyze the development of rhotacism in the Upper Kapuas-Mahakam languages of central Borneo. It is shown that subtle differences in the outcomes of rhotacism suggest a historical diffusion of rhotacism between dialects in a Proto-Upper Kapuas-Mahakam community. The subgroup-wide application of rhotacism interacted with other, localized changes that were restricted to specific dialects. Subgroup-wide changes therefore interact with already established dialectical divisions, leaving a mark on the historical evolution of languages in a dialectically heterogeneous community.
Keywords: sound change, contact, diffusion, Austronesian, Borneo
Article outline
- 1.Introduction
- 2.Rhotacism
- 3.Upper Kapuas-Mahakam languages
- 4.Rhotacism and Upper Kapuas-Mahakam historical phonology
- 5.Rethinking the reconstruction of Smith (2017a)
- 5.1l-fortition in word-initial position and issues with relative chronology
- 5.2Relative chronology of rhotacism
- 5.3Complications with Set 3
- 5.4*l reflexes in other positions
- 6.Modeling rhotacism
- 6.1A tree-based approach
- 6.2A mixed model approach
- 7.Conclusion
- Notes
References
References (27)
Blust, Robert. 2003. Thao dictionary (Language and Linguistics Monograph Series A5). Taipei: Institute of Linguistics, Academia Sinica.
Blust, Robert, Stephen Trussel & Alexander D. Smith. 2023. CLDF dataset derived from Blust’s “Austronesian Comparative Dictionary” (v1.2).
Cedeño, Rafael A. Núñez. 1987. Intervocalic /d/ Rhotacism in Dominican Spanish: A Non Linear Analysis. Hispania 70(2). 363–368.
Chrétien, C. Douglas. 1965. The statistical structure of the Proto-Austronesian morph. Lingua 141. 243–270.
François, Alexandre. 2014. Trees, Waves, and Linkages: Models of Language Diversification. In Claire Bowern & Bethwyn Evans (eds.), The Routledge Handbook of Historical Linguistics. London: Routledge.
Heggarty, Paul, Warren Maguire & McMahon April. 2010. Splits or waves? Trees or webs? How divergence measures and network analysis can unravel language histories. Philosophical Transactions of the Royal Society B: Biological Sciences 3651. 3829–3843.
Hock, Hans Henrich. 2021. Principles of Historical Linguistics (Trends in Linguistics Studies and Monographs 34). 3rd edn. Berlin: De Gruyter Mouton.
Jacques, Guillaume & Johan-Mattis List. 2019. Save the trees: Why we need tree models in linguistic reconstruction (and when we should apply them). Journal of Historical Linguistics 9(1). 128–166.
Milroy, James & Lesley Milroy. 1985. Linguistic change, social network and speaker innovation. Journal of Linguistics 12(2). 339–384.
Roberts, Phillip J. 2012. Latin rhotacism: A case study in the life cycle of phonological processes. Transactions of the Philological Society 110(1). 80–93.
Ross, Malcolm. 1988. Proto Oceanic and the Austronesian languages of western Melanesia. Canberra: Department of Linguistics, Research School of Pacific Studies, The Australian National University.
. 1997. Social networks and kinds of speech-community event. In Roger M. Blench & Matthew Spriggs (eds.), Archaeology and language 1: Theoretical and methodological orientations, 209–261. London: Routledge.
Schleicher, August. 1853a. Die ersten Spaltungen des indogermanischen Urvolkes. Allgemeine Monatsschrift für Wissenschaft und Literatur 31. 786–787.
. 1853b. O jazyku litevském, zvlástě ohledem na slovanský června. Časopis Českého Museum 271. 320–334.
Schmidt, Johannes. 1872. Die Verwantschaftsverhältnisse der indogermanischen Sprachen. Weimar: Hermann Böhlau.
Schuchardt, Hugo. 1900. Über die Klassifikation der romanischen Mundarten: Probe-Vorlesung, gehalten zu Leipzig am 30 April 1870. Graz.
Sellato, Bernard. 1981. Three-gender personal pronouns in some languages of central Borneo. Borneo Research Bulletin 121. 48–49.
. 1982. A double polarity in Aoheng terminological systems of direction. Borneo Research Bulletin 141. 24–27.
. 1994. Nomads of the Bornean rainforest: the economics, politics, and ideology of settling down. Honolulu: University of Hawaii Press.
Sellato, Bernard & Pierre Le Roux. 2004. A note in intervals, space and time, and the colors of vowels in the Aoheng language of Borneo. In Pierre Le Roux, Bernard Sellato & Jaques Ivanoff (eds.), Poids et Mesures en Asie du sud-est systèms métrologiques et sociétés, vol. 1, L’Asie du sud-est Austronésienne et ses marches (Études Thématiques 13), 259–265. Paris: École Fran.
Sellato, Bernard & Antonia Soriente. 2015. The languages and peoples of the Müller mountains: a contribution to the study of the origins of Borneo’s nomads and their languages. Wacana 16(2). 339–354.
Smith, Alexander D. 2017a. The languages of Borneo: a comprehensive classification. Department of Linguistics, University of Hawaii PhD Thesis.