The phonology of Pintupi has been described by K. C. and L. E. Hansen based on fieldwork conducted in Papunya, Northern Territory in 1967–68.
Consonants
Pintupi has 17 consonant phonemes. The symbols used in the practical orthography are shown in brackets where they differ from the IPA symbols. The lamino-alveolars are frequently palatalised, and often has an affricatedallophone. The trill usually has a single contact in ordinary speech, but multiple contacts in slow, emphatic, or angry speech. The retroflex approximant may also be realised as a flap. Hansen and Hansen refer to the retroflex consonants as "apico-domal".
Vowels
Pintupi has six vowel phonemes, three long and three short. All are monophthongal at the phonemic level. Again, the symbols used in the practical orthography are shown enclosed in brackets where they differ from the phonemic symbols.
Front
Central
Back
Close
•
•
Open
•
The short vowel phonemes are devoiced when word-final at the end of a clause, as in 'he finally to camp', 'we all water for him', and 'it was close'. Short vowels are rhotacised before retroflex consonants, as in 'tree ', 'spear ', and 'a shelter'. The open vowel is diphthongised to and before and respectively, as in 'pare ' and 'cold ashes'.
Orthography
An orthography was developed by the Hansens and is used in their publications, which include a dictionary, a grammar sketch and bible portions. This orthography is also used in the bilingual school, and especially in the school's Literature Production Centre. The orthography is shown in the above tables of consonants and vowels.
Phonotactics
Pintupi has only two possible syllable types: CV and CVC. In the middle of a word, and may appear in the syllable coda only when followed by a homorganic plosive, as in 'left side' and 'mouse'. Otherwise, only coronal sonorants may appear in the syllable coda. All consonants except the apico-alveolars and may appear in word-initial position; only coronal sonorants may appear in word-final position. However, at the end of a clause, the syllable is added to consonant-final words, so consonants may not appear in clause-final position. Short vowels may appear anywhere in the word; long vowels may appear only in the first syllable, as in 'eagle' and 'ignorant'.
Phonological processes
When a suffix-initial follows a root-final consonant, the assimilates in place of articulation to the preceding consonant, as in → 'younger sibling ', → 'at the spirit ground'. However, the sequence undergoes coalescence and surfaces as simple, as in → 'at Tjintar'. When two identical CV sequences meet at a word boundary, they undergo haplology and fuse into a single word in rapid speech, as in → 'climbed into the car' and → 'went around the middle'. When a lamino-alveolar consonant or is followed by in the last syllable of a word, and the next word begins with, the word-initial is deleted and the two adjacent -sounds merge into a long, as in → 'they all came' and → 'not west'.
Prosody
Pintupi words are stressed on the first syllable. In careful speech, every second syllable after that may receive a secondary stress, but secondary stress never falls on the final syllable of the word, as in 'for the benefit of Tjakamara' and 'because of mother-in-law'. However, the particle is not stressed when it is the first morpheme in a clause, as in ' went'.