“Tupian” is a common term applied by linguists to a linguistic stock of seven families spread across great parts of South America. Tupian languages share a large number of structural and morphological similarities which make genetic relationship very probable. Four families (Arikém, Mondé, Tuparí, and Raramarama-Poruborá) are still limited to the Madeira-Guaporé region in Brazil, considered by some scholars to be the Tupí homeland. Other families and branches would have migrated, in ancient times, down the Amazon (Mundurukú, Mawé) and up the Xingú River (Juruna, Awetí). Only the Tupí-Guarani branch, which makes up about 40 living languages, mainly spread to the south. Two Tupí-Guaraní languages played an important part in the Portuguese and Spanish colonisation of South America, Tupinambá on the Brazilian coast and Guaraní in colonial Paraguay. In the early 21st century, Guaraní is spoken by more than six million non-Indian people in Paraguay and in adjacent parts of Argentina and Brazil. Tupí-Guaraní (TG) is an artificial term used by linguists to denominate the family composed by eight subgroups of languages, one of them being the Guaraní subgroup and the other one the extinct Tupinambá and its varieties. Important phonological characteristics of Tupian languages are nasality and the occurrence of a high central vowel /ɨ/, a glottal stop /ʔ/, and final consonants, especially plosives in coda position. Nasality seems to be a common characteristic of all branches of the family. Most of them show phenomena such as nasal harmony, also called nasal assimilation or regressive nasalization by some scholars. Tupian languages have a rich morphology expressed mainly by suffixes and prefixes, though particles are also important to express grammatical categories. Verbal morphology is characterized by generally rich devices of valence-changing formations. Relational inflection is one of the most striking phenomena of TG nominal phrases. It allows marking the determination of a noun by a preceding adjunct, its syntactical transformation into a nominal predicate, or the absence of any relation. Relational inflection partly occurs also in other branches and families than Tupí-Guaraní. Verbal person marking is realized by prefixing in most languages; some languages of the Tuparí and Juruna family, however, use only free pronouns. Tupian syntax is based on the predication of both verbs and nouns. Subordinate clauses, such as relative clauses, are produced by nominalization, while adverbial clauses are formed by specific particles or postpositions on the predicate. Traditional word order is SOV.
Timothy J. Vance
The term rendaku, sometimes translated as sequential voicing, denotes a morphophonemic phenomenon in Japanese. In a prototypical case, an alternating morpheme appears with an initial voiceless obstruent as a word on its own or as the initial element (E1) in a compound but with an initial voiced obstruent as the second element (E2) in a two-element compound. For example, the simplex word /take/ ‘bamboo’ and the compound /take+yabu/ ‘bamboo grove’ (cf. /yabu/ ‘grove’) begin with voiceless /t/, but this morpheme meaning ‘bamboo’ begins with voiced /d/ in /sao+dake/ ‘bamboo (made into a) pole’ (cf. /sao/ ‘pole’). Rendaku was already firmly established in 8th-century Old Japanese (OJ), the earliest variety for which extensive written records exist, and subsequent sound changes have made the alternations phonetically heterogeneous. Many OJ compounds with eligible E2s did not undergo rendaku, and the phenomenon remains pervasively irregular in modern Japanese. There are, however, many factors that promote or inhibit rendaku, and some of these appear to influence native-speaker behavior on experimental tasks. The best known phonological factor is Lyman’s Law, according to which rendaku does not apply to E2s that contain a non-initial voiced obstruent. Many theoretical phonologists endorse the idea that Lyman’s Law is a sub-case of the Obligatory Contour Principle, which rules out identical or similar units if they would be adjacent in some domain. Other well-known factors involve vocabulary stratum (e.g., the resistance to rendaku of recently borrowed E2s) or the morphological/semantic relationship between E2 and E1 (e.g., the resistance to rendaku of coordinate compounds). Some morphemes are idiosyncratically immune to rendaku. Other morphemes alternate but undergo rendaku in some compounds while failing to undergo it in others, even though no known factor is relevant. In addition, many individual compounds vary between a form with rendaku and a form without, and this variability is often not reflected in dictionary entries. Despite its irregularity, rendaku is productive in the sense that it often applies to newly created compounds. Many compounds, of course, are stored (with or without rendaku) in a speaker’s lexicon, but fact that native speakers can apply rendaku not just to existing E2s in novel compounds but even to made-up E2s shows that rendaku as an active process is somehow incorporated into the grammar.
Giorgio Francesco Arcodia and Bianca Basciano
Sino-Tibetan is a highly diverse language family, in which a wide range of morphological phenomena and profiles may be found. The family is generally seen as split into two major branches, i.e., Sinitic and Tibeto-Burman, but while Sinitic is a fairly homogeneous group in terms of morphology, the so-called Tibeto-Burman branch of the family includes isolating languages like Karen, languages with transparent and regular agglutinative morphology (Lolo-Burmese, Tibetic, and Boro-Garo), but also paradigmatically complex languages, with elaborate argument indexation and transitivity management systems; while in some languages morphological complexity is mostly a conservative trait (e.g., Rgyalrongic and Kiranti), other languages developed innovative paradigms, with only few vestiges of the archaic system (Kuki-Chin). Some notable morphological phenomena in modern Tibeto-Burman languages are verb stem alternation, peculiar nominalization constructions, and long sequences of prefixes, which in some languages (Chintang) may even be freely permutated without any relevant change in meaning. Also, while Sinitic languages are normally taken to be a prototypical example of the (ideal) isolating morphological type (with virtually no inflection, stable morpheme boundaries, no cumulative exponence, and no allomorphy or suppletion), phenomena of strong reduction of morphemes, blurring of morpheme boundaries and fusion between root and suffix, and nonconcatenative morphology, as well as allomorphy and (proto-)paradigmatic organization of morphology, are attested in some Chinese dialects, mostly concentrated in an area of Northern China (Shaanxi, Shanxi, Henan, Hebei, and Shandong provinces). Moreover, ‘Altaic-type’ agglutinative morphology, including case marking, is found in Sinitic languages of the so-called Qinghai-Gansu Sprachbund; in this case, the development of agglutination, as well as other typological traits (as SOV word order), is clearly the product of intense and prolonged contact between Northwestern Chinese dialects and Tibetic and Mongolic languages of China. On the other hand, Southern Chinese dialects have developed in closer contact with Hmong-Mien, Tai-Kadai, and Austroasiatic languages, and are thus closer to the typology of Mainland Southeast Asian languages, with a very strong isolating profile.