Martuthunira has a fairly standard Australian
phonology.
R. M. W. Dixon uses it as a prototypical example in his 2002 book
Australian Languages: Their nature and development.
Consonants The laterals—but perhaps uniquely not the nasals—are allophonically
prestopped. The laminal stop has a voiced
allophone between vowels. Between vowels, the dental stop can become , , , , , , or even simply a syllable break. In some words one particular realization is always used, in others there is
free variation. The alveolar stop has a voiced allophone after a nasal. It occurs between vowels only in a handful of words, probably all
loanwords, where it has a longer period of closure than the other stops . The retroflex stop has a voiced allophone after a nasal, and a flapped allophone between vowels. Besides the voiced allophones mentioned above, stops are usually voiceless and
unaspirated. The laterals have
prestopped allophones when they occur in a
syllable coda. The alveolar rhotic is a tap between vowels, and a usually voiceless trill finally. The palatal semivowel may be dropped initially before , but the equivalent dropping of before initial is rare.
Vowels is usually realised as , though it may be realised as near palatal consonants and as near , or . is realised as in morpheme-initial syllables, elsewhere. is usually realised as in stressed syllables, and in unstressed syllables. is fronted to varying degrees when near laminal consonants, being most fronted when preceded by a dental consonant. It has an unrounded allophone when followed by . is usually , but is lowered to when preceded by a dental consonant. is usually when stressed, when unstressed. Following a laminal consonant, more so after dentals than palatals, it is fronted towards . When preceded by and followed by a velar consonant, it is realised as . is usually simply .
Phonotactics All Martuthunira words begin with one of the following consonants, from most to least frequent: . This consists of only peripheral and laminal stops, nasals, and semivowels. Words may end in a vowel, or one of . ==Grammar==