Morphological change refers to change(s) in the structure of words. Since morphology is interrelated with phonology, syntax, and semantics, changes affecting the structure and properties of words should be seen as changes at the respective interfaces of grammar. On a more abstract level, this point relates to linguistic theory. Looking at the history of morphological theory, mainly from a generative perspective, it becomes evident that despite a number of papers that have contributed to a better understanding of the role of morphology in grammar, both from a synchronic and diachronic point of view, it is still seen as a “Cinderella subject” today. So there is still a need for further research in this area. Generally, the field of diachronic morphology has been dealing with the identification of the main types of change, their mechanisms as well as the causes of morphological change, the latter of which are traditionally categorized as internal and external change. Some authors take a more general view and state the locus of change can be seen in the transmission of grammar from one generation to the next (abductive change). Concerning the main types of change, we can say that many of them occur at the interfaces with morphology: changes on the phonology–morphology interface like i-mutation, changes on the syntax–morphology interface like the rise of inflectional morphology, and changes on the semantics–morphology like the rise of derivational suffixes. Examples from the history of English (which in this article are sometimes complemented with examples from German and the Romance languages) illustrate that sometimes changes indeed cross component boundaries, at least once (the history of the linking-s in German has even become a prosodic phenomenon). Apart from these interface phenomena, it is common lore to assume morphology-internal changes, analogy being the most prominent example. A phenomenon regularly discussed in the context of morphological change is grammaticalization. Some authors have posed the question of whether such special types of change really exist or whether they are, after all, general processes of change that should be modeled in a general theory of linguistic change. Apart from this pressing question, further aspects that need to be addressed in the future are the modularity of grammar and the place of morphology.
Indo-European languages of the most archaic type, such as Old Indic and Ancient Greek, have rich fusional morphologies with predominant use of suffixation and ablaut as formal devices. The presence of cumulative inflectional morphs in final position is also a general IE feature. A noteworthy property of the archaic IE morphological system is its root-based organization. This is well observable in Old Indo-Aryan, where the mental lexicon is largely made up of roots unspecified for word-class membership. In the historical development of the different IE branches, recurrent phenomena are observed that lead to an increase in configurationality and a decrease in the degree of synthesis (use of adpositions at the expense of case forms, rise of auxiliaries and increasing employment of periphrastic morphology, creation of determiners). However, not all the documented developments can be subsumed under the rubric ‘morphological decay’: new synthetic verbal forms, which often coexist with the inherited ones, are often created via resynthesization of periphrases; new nominal case forms are sometimes created through univerbation of adpositional phrases; instances of prefixation recurrently arise from former compound structures consisting of adverb (‘preverb’) + verb. The formation of inflectional paradigms with several mutually unpredictable subsections and of relatively complex systems of inflectional classes is also observed in various IE languages. The same holds for the rising of new patterns of morphophonological alternations, which often allow the preservation of several morphological oppositions even after the loss of inflectional endings. As a consequence, modern IE languages may exhibit higher degrees of fusionality, at least in specific morphological subsystems, than their diachronic foregoers. In the various branches, the system of inflectional morphology could undergo several reshapings at the level of both the structure of grammatical categories and the formal organization of paradigms, sometimes with noteworthy typological changes. English poor morphology, Ossetic and New Armenian agglutinative nominal inflections, lack of verbal inflection of number, and presence of numeral classifiers in Eastern New Indo-Aryan varieties are among the examples of extreme departure from the ancient IE morphological type. A common development concerning word formation is the decline of the root-based organization of morphology.
Analogy is traditionally regarded as one of the three main factors responsible for language change, along with sound change and borrowing. Whereas sound change is understood to be phonetically motivated and blind to structural patterns and semantic and functional relationships, analogy is licensed precisely by those patterns and relationships. In the Neogrammarian tradition, analogical change is regarded, at least largely, as a by-product of the normal operation (acquisition, representation, and use) of the mental grammar. Historical linguists commonly use proportional equations of the form A : B = C : X to represent analogical innovations, where A, B, and C are (sets of) word forms known to the innovator, who solves for X by discerning a formal relationship between A and B and then deductively arriving at a form that is related to C in the same way that B is related to A. Along with the core type of analogical change captured by proportional equations, most historical linguists include a number of other phenomena under the analogy umbrella. Some of these, such as paradigm leveling—the reduction or elimination of stem alternations in paradigms—are arguably largely proportional, but others such as contamination and folk etymology seem to have less to do with the normal operation of the mental grammar and instead involve some kind of interference among the mental representations of phonetically or semantically similar forms. The Neogrammarian approach to analogical change has been criticized and challenged on a variety of grounds, and a number of important scholars use the term “analogy” in a rather different sense, to refer to the role that phonological and/or semantic similarity play in the influence that forms exert on each other.
Dene-Yeniseian is a putative family consisting of two branches: Yeniseian in central Siberia and Na-Dene (Tlingit-Eyak-Athabaskan) in northwestern North America. Yeniseian contains a single living representative, Ket, as well as the extinct Yugh, Kott, Assan, Arin, and Pumpokol languages. Na-Dene contains Tlingit, spoken mainly in the Alaskan Panhandle, and a second branch divided equidistantly between the recently extinct Eyak language of coastal Alaska and the widespread Athabaskan subfamily, which originally contained more than 40 distinct languages, some now extinct. Athabaskan was once spoken throughout interior Alaska (Dena’ina, Koyukon) and most of northwestern Canada (Slave, Witsuwit’en, Tsuut’ina), with enclaves in California (Hupa), Oregon (Tolowa), Washington (Kwalhioqua-Clatskanie), and the American Southwest (Navajo, Apache). Both families are typologically unusual in having a strongly prefixing verb and nominal possessive prefixes, but postpositions rather than prepositions. The finite verb arose from the amalgamation of an auxiliary and a main verb, both with its own agreement prefixes and tense-mood-aspect suffixes, creating a rigid, mostly prefixing template. The word-final suffixes largely elided in Yeniseian but merged with the ancient verb root in Na-Dene to create a series of allophones called stem sets. Na-Dene innovated a unique complex of verb prefixes called “classifiers” on the basis of certain inherited agreement and tense-mood-aspect markers; all of these morphemes have cognates in Yeniseian, where they did not innovate into a single complex. Metathesis and reanalysis of old morphological material is quite prevalent in the most ancient core verb morphology of both families, while new prefixal or suffixal slots added onto the verb’s periphery represent innovations that distinguish the individual daughter branches within each family. Other shared Dene-Yeniseian morphology includes possessive constructions, directional words, and an intricate formula for deriving action nominals from finite verb stems. Yeniseian languages have been strongly affected by the exclusively suffixing languages brought north to Siberia by reindeer breeders during the past two millennia. In modern Ket the originally prefixing verb has largely become suffixing, and possessive prefixes have evolved into clitics that prefer to attach to any available preceding word. Na-Dene languages were likewise influenced by traits prevalent across the Americas. Athabaskan, for example, developed a system of obviation in third-person agreement marking and elaborated an array of distinct verb forms reflecting the shape, animacy, number, or consistency of transitive object or intransitive subject. Features motivated by language contact differ between Tlingit, Eyak, and Athabaskan, suggesting they arose after the breakup of Na-Dene, as the various branches spread across northwestern North America. The study of Dene-Yeniseian morphology contributes to historical-comparative linguistics, contact linguistics, and also to the diachronic study of complex morphology. In particular, comparing Yeniseian and Na-Dene verb structure reveals the prominence of metathesis and reanalysis in processes of language change. Dene-Yeniseian is noteworthy not only for its wide geographic spread and for the effects of language contact on each separate family, but also for the opportunity to trace the evolution of uncommon morphological structures.
Old and Middle Japanese are the pre-modern periods of the attested history of the Japanese language. Old Japanese (OJ) is largely the language of the 8th century, with a modest, but still significant number of written sources, most of which is poetry. Middle Japanese is divided into two distinct periods, Early Middle Japanese (EMJ, 800–1200) and Late Middle Japanese (LMJ, 1200–1600). EMJ saw most of the significant sound changes that took place in the language, as well as profound influence from Chinese, whereas most grammatical changes took place between the end of EMJ and the end of LMJ. By the end of LMJ, the Japanese language had reached a form that is not significantly different from present-day Japanese. OJ phonology was simple, both in terms of phoneme inventory and syllable structure, with a total of only 88 different syllables. In EMJ, the language became quantity sensitive, with the introduction of a long versus short syllables. OJ and EMJ had obligatory verb inflection for a number of modal and syntactic categories (including an important distinction between a conclusive and an (ad)nominalizing form), whereas the expression of aspect and tense was optional. Through late EMJ and LMJ this system changed completely to one without nominalizing inflection, but obligatory inflection for tense. The morphological pronominal system of OJ was lost in EMJ, which developed a range of lexical and lexically based terms of speaker and hearer reference. OJ had a two-way (speaker–nonspeaker) demonstrative system, which in EMJ was replaced by a three-way (proximal–mesial–distal) system. OJ had a system of differential object marking, based on specificity, as well as a word order rule that placed accusative marked objects before most subjects; both of these features were lost in EMJ. OJ and EMJ had genitive subject marking in subordinate clauses and in focused, interrogative and exclamative main clauses, but no case marking of subjects in declarative, optative, or imperative main clauses and no nominative marker. Through LMJ genitive subject marking was gradually circumscribed and a nominative case particle was acquired which could mark subjects in all types of clauses. OJ had a well-developed system of complex predicates, in which two verbs jointly formed the predicate of a single clause, which is the source of the LMJ and NJ (Modern Japanese) verb–verb compound complex predicates. OJ and EMJ also had mono-clausal focus constructions that functionally were similar to clefts in English; these constructions were lost in LMJ.
David M. Bunis
The Ibero-Romance-speaking Jews of medieval Christian Iberia were linguistically distinct from their non-Jewish neighbors primarily as a result of their language’s unique Hebrew-Aramaic component; preservations from older Jewish Greek, Latin, and Arabic; a tradition of translating sacred Hebrew and Aramaic texts into their language using archaisms and Hebrew-Aramaic rather than Hispanic syntax; and their Hebrew-letter writing system. With the expulsions from Iberia in the late 15th century, most of the Sephardim who continued to maintain their Iberian-origin language resettled in the Ottoman Empire, with smaller numbers in North Africa and Italy. Their forced migration, and perhaps a conscious choice, essentially disconnected the Sephardim from the Spanish language as it developed in Iberia and Latin America, causing their language—which they came to call laðino ‘Romance’, ʤuðezmo or ʤuðjó ‘Jewish, Judezmo’, and more recently (ʤudeo)espaɲol ‘Judeo-Spanish’—to appear archaic when compared with modern Spanish. In their new locales the Sephardim developed the Hispanic component of their language along independent lines, resulting in further differentiation from Spanish. Divergence was intensified through borrowing from contact languages of the Ottoman Empire such as Turkish, Greek, and South Slavic. Especially from the late 18th century, factors such as the colonializing interests of France, Italy, and Austro-Hungary in the region led to considerable influence of their languages on Judezmo. In the 19th century, the dismemberment of the Ottoman and Austro-Hungarian empires and their replacement by highly nationalistic states resulted in a massive language shift to the local languages; that factor, followed by large speech-population losses during World War II and immigration to countries stressing linguistic homogeneity, have in recent years made Judezmo an endangered language.