Diachronica - Volume 38, Issue 1, 2021

Sino-Tibetan (Trans-Himalayan) is one of the typologically most diverse language families in the world, one of the few comprising all gradients of morphological complexity, from isolating to polysynthetic. No consensus exists as yet on whether the rich morphology found in some languages, in particular person indexation, should be reconstructed in the common Sino-Tibetan ancestor or whether it is a later innovation confined to and defining a particular “Rung” subgroup. In this article, we argue that this question is fundamentally a problem of phylogeny, and that the results of recent works on the phylogeny of Sino-Tibetan, supplemented by a more refined investigation of shared lexical innovations, provide support for the idea that person indexation morphology is not a recent innovation and that the languages lacking such a feature are thus innovative.

Previous theoretical discussion about inverse systems has largely revolved around the synchronic and diachronic relationship between the inverse and the passive. In contrast, this study argues for the antipassive origins of two inverse constructions in Monsang (Trans-Himalayan), which are used for 3→SAP and 2→1 scenarios. This questions central assumptions from previous accounts about the functional motivation underlying inverse systems, and suggests that strategies of avoiding overt reference may be at play. The diachronic pathway proposed here connects the traditional inverse with other special marking patterns that involve speech act participant objects, in particular the “pseudo-inverse” construction of innovative first person object indexation.

This paper analyzes the origins and evolution of the Wolof (Atlantic: Senegal) consonant mutation and noun class marking systems. I attribute Wolof mutation to the earlier presence of CV(C)- class prefixes on nouns, the (usually final) consonants of which fused with the following root-initial consonant to yield the modern mutation alternations. I reconstruct these original class prefixes using newly-proposed internal and comparative evidence, drawing on early documentary sources dating from the late 17th century. An understanding of the history of Wolof mutation allows for a better account of the synchronic system, in which mutation is triggered by specific noun classes rather than sporadically marking deverbal derivation. This study contributes to the broader understanding of how consonant mutation systems emerge and evolve, and of phonological considerations in noun class assignment.

The loss of inflectional categories is often thought of as a type of simplification. In this paper we present a survey of phenomena involving the reduction of adjective agreement in Scandinavian, using examples from Norwegian, and discuss their diachronic origins, including a new account of the development of indeclinability in adjectives such as kry ‘proud’. These examples each involve lexically restricted non-canonical inflection – syncretism, defectiveness, overdifferentiation and periphrasis – in particular paradigm cells or syntactic environments. They show that the loss of inflection does not necessarily simplify grammar, and in some cases, can increase grammatical complexity by adding lexical exceptions to general rules. This excludes simplification as the motivation, even if it is the eventual result. We argue from these historical developments that speakers are liable to analyse idiosyncratic patterns of inflection as lexically specified, even where more general (but perhaps more abstract) alternatives are possible. Thus speakers do not always operate with a maximally elegant, reductionist approach to inflection classes.