Article published In: Diachronica
Vol. 43:1 (2026) ► pp.1–40
The history of the [ɨm] causatives in Mapudungun
From regular phonology to lexicalisation
Available under the Creative Commons Attribution (CC BY) 4.0 license.
For any use beyond this license, please contact the publisher at rights@benjamins.nl.
Open Access publication of this article was funded through a Transformative Agreement with University of Edinburgh.
Published online: 6 September 2025
https://doi.org/10.1075/dia.24080.ber
https://doi.org/10.1075/dia.24080.ber
Abstract
This paper describes and analyses a historical alternation in what contemporary Mapudungun has developed as a set of transitive roots ending in [Cɨm], where C can represent a labial stop, a retroflex affricate or a velar stop. These forms are historically related to a causativisation process formed with a root ending in what is now a fricative plus the now-unproductive suffix [-ɨm]. An example of this pattern today is the adjective [laf] ‘(adj) flat’ vis-à-vis the transitive verb [lapɨm-] ‘to stretch (out)’. This paper posits that the word-internal stop consonant preceding [ɨm] is the unaffected remnant of an ancestral fricativisation process that targeted final stops in older Mapudungun. By presenting evidence from the historical record, the trajectory of these linguistic patterns is analysed in relation to the theoretical assumptions of the Life Cycle of Phonological Processes. This work contributes to theoretical questions about what is possible in language change as well as to the internal reconstruction of this language isolate.
Article outline
- 1.Introduction
- 2.Background information
- 2.1About Mapudungun
- 2.2Segmental inventory and distribution
- 2.3Periodisation of Mapudungun
- 3.The patterns: Causatives, RCA, and [Cɨm] roots
- 3.1The causative in present-day Mapudungun
- 3.2Emergence of the [-(ɨ)m] suffix
- 3.3“Sometimes the letters change”
- 4.Evidence and analysis
- 4.1Summing up and presenting more evidence
- 4.1.1Brouwer/Herckmans’ list (1647)
- 4.1.2Evidence from a placename
- 4.2Life Cycle model
- 4.3Analysis: What happened?
- 4.1Summing up and presenting more evidence
- 5.Conclusion
- Acknowledgements
- Notes
- Abbreviations
References
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