Phonology The Austronesian languages overall possess
phoneme inventories which are smaller than the world average. Around 90% of the Austronesian languages have inventories of 19–25 sounds (15–20 consonants and 4–5 vowels), thus lying at the lower end of the global typical range of 20–37 sounds. However, extreme inventories are also found, such as
Nemi (
New Caledonia) with 43 consonants. The canonical root type in
Proto-Austronesian is disyllabic with the shape CV(C)CVC (C = consonant; V = vowel), and is still found in many Austronesian languages. In most languages, consonant clusters are only allowed in medial position, and often, there are restrictions for the first element of the cluster. There is a common
drift to reduce the number of consonants which can appear in final position, e.g.
Buginese, which only allows the two consonants /ŋ/ and /ʔ/ as finals, out of a total number of 18 consonants. Complete absence of final consonants is observed e.g. in
Nias,
Malagasy and many
Oceanic languages.
Tonal contrasts are rare in Austronesian languages, although
Moken–Moklen and a few languages of the
Chamic,
South Halmahera–West New Guinea and
New Caledonian subgroups do show lexical tone.
Morphology Most Austronesian languages are
agglutinative languages with a relatively high number of
affixes, and clear morpheme boundaries. Most affixes are
prefixes (
Malay ber-jalan 'walk' avete'' 'work (noun)' <
tavete 'work (verb)').
Reduplication is commonly employed in Austronesian languages. This includes full reduplication (
Malay anak-anak 'children' <
anak 'child';
Karo Batak nipe-nipe 'caterpillar' <
nipe 'snake') or partial reduplication (
Agta taktakki 'legs' <
takki 'leg',
at-atu 'puppy' <
atu 'dog').
Syntax It is difficult to make generalizations about the languages that make up a family as diverse as Austronesian. Very broadly, one can divide the Austronesian languages into three groups based upon their grammatical typologies: Philippine-type languages, Indonesian-type languages and post-Indonesian type languages: • The first group, the
Philippine-type languages include, besides the languages of the
Philippines, the Austronesian languages of Taiwan, Sabah, North Sulawesi and Madagascar. It is primarily characterized by the retention of the original system of
Philippine-type voice alternations, where typically three or four verb voices determine which
semantic role the "subject"/"topic" expresses (it may express either the actor, the patient, the location and the beneficiary, or various other circumstantial roles such as instrument and concomitant). The phenomenon has frequently been referred to as
focus (not to be confused with the
usual sense of that term in linguistics). Furthermore, the choice of voice is influenced by the
definiteness of the participants. The word order has a strong tendency to be verb-initial. • In contrast, the more innovative
Indonesian-type languages, which are particularly represented in Malaysia and western Indonesia, have reduced the voice system to a contrast between only two voices (actor voice and "undergoer" voice), but these are supplemented by
applicative morphological devices (originally two: the more direct *
-i and more oblique *
-an/-[a]kən), which serve to modify the semantic role of the "undergoer". They are also characterized by the presence of preposed clitic pronouns. Unlike the Philippine type, these languages mostly tend towards verb-second word-orders. A number of languages, such as the
Batak languages,
Old Javanese,
Balinese,
Sasak and several Sulawesi languages seem to represent an intermediate stage between these two types. • Finally, in some languages, which Ross calls "
post-Indonesian", the original voice system has broken down completely and the voice-marking affixes no longer preserve their functions. Preposed possessor and transitional languages could also fall into this type. Additional types of Austronesian languages include: •
Central Bornean-type languages, like the Indonesian type, have both actor voice and undergoer voice, but the latter are realised by a preverbal particle, and applicative voice are absent in these languages. Also, the nasal prefix does not mark any of aforementioned both voices. This type is represented by many indigenous languages of Borneo, such as
Land Dayak,
Kenyah, and
Kayan–Murik branches. •
Preposed possessor languages, as the name suggests, place modifiers ("
possessors") before the possessed objects ("possessum"), and lack original
symmetrical voice. Most other languages
construct them in reverse ("postposed possessor", a notable exception to this rule is
Banggai). This type is represented by Austronesian languages of
Timor,
Maluku Islands, and
Papua, as well as
Malay trade and creole languages. • Languages that have neither symmetrical voice nor preposed possessor construction are called
transitional languages. Many of them have
ergative–absolutive alignment and elaborate person marking, but they do not share core features in common. Some languages of Sumatra (e.g.
Acehnese,
Nias), the southern half of Sulawesi (e.g.
Buginese,
Makassarese,
Muna,
Banggai), and East Nusa Tenggara (e.g.
Kambera) fall into this category. ==Lexicon==