Numbami (also known as Siboma or Sipoma) is an Austronesian language spoken by about 200 people with ties to a single village in Morobe Province, Papua New Guinea. It is spoken in Siboma village (7.512985°S 147.301128°E / -7.512985; 147.301128 (Siboma)), Paiawa ward, Morobe Rural LLG. Numbami is a phonologically conservative isolate within the Huon Gulf languages, and is the last Austronesian language on the south coast of the Huon Gulf. Its nearest relatives along the coast to the southeast are 270 km (170 mi) away, Maisin and Arifama-Miniafia in Oro Province (Northern Province in the former colony of Papua). The word order typology of Numbami and the Huon Gulf languages is subject–verb–object (SVO), which is typical of Austronesian languages; while that of Arifama-Miniafia and most of the Papuan Tip languages is subject–object–verb (SOV), which is typical of Papuan languages. Maisin has been characterized as a mixed language, with both Austronesian and Papuan features that obscure its primary heritage, and there is evidence that settlements of Austronesian speakers along the 270 km of coast were gradually absorbed into inland communities speaking Binanderean languages (Bradshaw 2017).
Phonology Numbami distinguishes 5 vowels and 18 consonants. Voiceless /s/ is a fricative, but its voiced and prenasalized equivalents are affricated, varying between more alveolar [(n)dz] and more palatalized [(n)dʒ]. The liquid /l/ is usually rendered as a flap [ɾ]. The labial approximant is slightly fricative, tending toward [β], when followed by front vowels.
Vowels (orthographic)
Consonants (orthographic)
Obstruent harmony Prenasalized obstruents only occur in medial position, where the distinction between oral and prenasalized voiced obstruents is somewhat predictable. Medial voiced obstruents are statistically far more likely to be oral in words beginning with oral voiced obstruents, while they are far more likely to be prenasalized in words beginning with anything else. If denasalization of voiced obstruents is an ongoing change, one can track its progress through different lexical environments: it is 100% complete in word-initial position (as in bola 'pig' and buwa 'areca nut'), 80% complete in the middle of words beginning with voiced obstruents (as in bada 'market' and dabola 'head' vs. zanzami 'driftwood'), 35% complete in the middle of words beginning with approximants or vowels (as in ababa 'crosswise' vs. ambamba 'handdrum' and waŋga 'canoe'), not quite 20% complete in words beginning with voiceless obstruents (as in kaze 'left side' vs. kaimbombo 'butterfly' and pindipanda 'flea'), not quite 5% complete in words beginning with nasals (as in nomba 'thing' and -mande 'to die'), and not attested at all in words beginning with liquids (as in lenda 'nit' and lindami 'lime spatula'). (See Bradshaw 1978a.)
Morphology Although Numbami is phonologically conservative, it retains very little productive morphology, most of it related to person and number marking.
Pronouns and person markers
Free pronouns Free pronouns occur in the same positions as subject or object nouns. They distinguish three persons (with a clusivity distinction in the first person) and four numbers (Bradshaw 1982a).
Genitive pronouns Genitive pronouns also distinguish three persons (plus clusivity) and four numbers (Bradshaw 1982a).
Subject prefixes Verbs are marked with subject prefixes that distinguish three persons (plus clusivity) and two tenses, Nonfuture and Future. (The latter distinction is often characterized as one between Realis and Irrealis mode; see Bradshaw 1993, 1999.)
In most cases, subject prefixes are easily segmentable from verb stems, but in a few very high frequency cases, prefix-final vowels merge with verb-initial vowels to yield irregularly inflected forms, as in the following paradigm: wani (< wa-ani) '1SG-eat', woni (< u-ani) '2SG-eat', weni (< i-ani) '3SG-eat', tani (< ta-ani) '1PLINCL-eat', mani (< ma-ani) '1PLEXCL-eat', moni (< mu-ani) '2PL-eat', teni (< ti-ani) '3PL-eat'.
Numerals Traditional Numbami counting practices started with the digits of the left hand, then continued on the right hand and then the feet, to reach '20', which translates as 'one person'. Higher numbers are multiples of 'one person'. Nowadays, most counting above '5' is done in Tok Pisin. As in other Huon Gulf languages, the short form of the numeral 'one' functions as an indefinite article.
Names Like many other Huon Gulf languages, Numbami has a system of birth-order names. The seventh son and sixth daughter are called "No Name": Ase Mou 'name none'.
Ideophones Although many languages have a class of ideophones with distinctive phonology, Numbami is unusual in having a morphological marker for such a class. The suffix -a(n)dala is unique to ideophones but is clearly related to the word andalowa 'path, way, road' (POc *jalan). (See Bradshaw 2006.) In the following examples, acute accents show the placement of word stress.
bái-andala 'overcast, clouded over' dendende-ándala 'shivering' golópu-adala 'slipping or dripping through' kí-andala 'scorching, parched' paká-adala 'getting light, flashing on, popping' pilipíli-adala 'flapping, fluttering' sí-andala 'shooting up, springing away' sulúku-adala 'sucking, slurping' taká-adala 'stuck fast, planted firmly' tíki-adala 'going dark'
Syntax
Word order The basic word order in Numbami is SVO, with prepositions, preposed genitives, postposed adjectives and relative clauses. Relative clauses are marked at both ends, and so are some prepositional phrases. Negatives come at the ends of the clauses they negate. There is also a class of deverbal resultatives that follow the main verb (and its object, if any).
Possessive vs. attributive genitives Two kinds of genitive modifiers precede their heads while one type follows its head noun (Bradshaw 1982a).
Whole-part genitives Noun-noun phrases denoting wholes and parts occur in the order stated, with the latter serving as head of the phrase: wuwu lau 'betel pepper leaf', tina daba 'headwater', nima daba (lit. 'hand head') 'thumb', kapala lalo (lit. 'house inside') 'indoors', Buzina bubusu 'Buzina (Salamaua) point'.
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