Article published In: Journal of Historical Linguistics: Online-First Articles
On the distinction between ambiguity and vagueness in grammatical change
Available under the Creative Commons Attribution (CC BY) 4.0 license.
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Published online: 2 March 2026
https://doi.org/10.1075/jhl.24038.kuo
https://doi.org/10.1075/jhl.24038.kuo
Abstract
We argue that we should maintain the distinction between ambiguity and vagueness in grammatical change, especially
in usage-based linguistics, as it offers a more fine-grained perspective on types of context, change, and linguistic structure.
Drawing on previous research, we present two case studies: the semantic history of be going to, and the
morphosyntactic history of Mandarin modals and conditionals. These studies show that the initial relation involved in grammatical
change is one of vagueness. We also contrast our usage-based perspective with that of frameworks where the clause is
hierarchically organised such that the initial relation is more likely one of ambiguity.
Keywords: vagueness, ambiguity, grammaticalization, usage-based linguistics
Article outline
- 1.Introduction
- 2.The distinction in the literature
- 2.1Lexical semantics
- 2.2Morphosyntax
- 2.3Grammatical change
- 3.Discussion: Maintaining the distinction
- 4.Case study: Be going to
- 4.1Previous investigation on be going to
- 4.2Data and data collection
- 4.3The innovation of intention
- 4.4The innovation of prediction
- 5.Case study: Mandarin modals and conditionals
- 5.1Distributional and functional properties
- 5.2The triclausal construction
- 5.3The morphosyntactic histories of xūshì and chúfēi
- 6.Discussion and conclusion
- Acknowledgements
- Notes
References
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