Tifal is anOk language spoken inPapua New Guinea. Dialects are Tifal (Tifalmin), Urap (Urapmin) and Atbal (Atbalmin).

The Tifal language is bounded by Papuan and Irian Jaya speakers to the south and west, theTelefomin valley in the east, and theSepik river to the north.^[2]

/b/ is realized as[pʰ] word finally, as[p] in syllable-coda position before a consonant, and[b] elsewhere.

/t/ is realized as[t] in syllable coda before a consonant and[tʰ] elsewhere.

/d/ is realized as[ɾ] intervocalically, e.g./didab/:[dɪˈɾʌpʰ] 'water container'.

/k/ is[ɣ] intervocalically,[k] in syllable coda before consonants, and[kʰ] elsewhere.

/s/ is realized as[ʂ] before/u/.

/l/ is alveolar adjacent to back vowels andalveodental elsewhere.^[3] One dialect realizes/l/ as[r] intervocalically.

/o/ and/oː/ rarely contrast.^[4]

Syllable structure is (C)V(ː)(C). The expressionkwiin takan 'oh my!' may be an exception.

/d/ only occurs word-initially.^[6]/f/ only occurs syllable-initially.^[7]/ŋ/ is always syllable-final.^[8]

Initial/l/ only occurs in some dialects. Initial/kw/ occurs in two dialects, and may usually be interpreted as C+V.

/w/ and/j/ occur syllable-initially.^[9] Only one dialect allows syllable-coda/j/.^[10]

In inflected words stress lies on the last syllable of the verb stem. If there are long vowels stress falls on the first syllable in the word. If all vowels are short, stress falls on the last syllable. If it is closed stress falls on the first syllable.

Nouns are not inflected but may mark possession. Body parts and kinship terms are obligatorily possessed, and some kinship terms require affixing. On other nouns possession is optional, except for proper names which are never possessed.^[11]

Tifal has a rich aspectual system.^[15] Verbs may be separated into four groups based on how they transform from continuative to punctiliaraspect. Some only have vowel and/or simple stem changes, some havesuppletive stems, some change compound-final stems, and some which haveallomorphs which add-(a)laa-min (or rarely-daa-laa-min) to the stem.^[16]

Verbs also can be divided based ontransitivity. Some require direct objects, some with optional objects, some with optional locational objects, and a fewintransitive verbs.^[17]

Most final verbs mark tense, mood, and person, but most verbs can mark aspect and not tense and still be a final verb.^[19]

1. "initial consonant of the customary or class changing marker is retained"

Tifal sentences are contain inflected verb-root-chains, often with a final fully conjugated verb. One must inflect for the amount of time between one verb in the chain and the next.^[21]

Marking spatial relation between verbs and their objects is obligatory. "up" must be clarified as either "upslope" or "upstream", "down" as "downslope" or "downstream", and "across" as "across land" or "across a river".^[21]

Tifal has dyadic kinship terms (terms referring to the relationship two or more people have to each other), which are present in less than 10 languages and not prevalent in Papua New Guinea. However, they are a salient feature of the Ok languages. Related terms are found inOksapmin,Mian, andTelefol.^[22]

• Urapmin language

• Boush, Al; Boush, Susan (1974),Tifal phonology (Manuscript), archived fromthe original on 2012-10-11
• Boush, Al (1975),Tifal grammar essentials (Manuscript), archived fromthe original on 2012-10-11
• Boush, Al (1979),Aspect on Tifal final and medial verbs (Manuscript), archived fromthe original on 2012-10-11
• Tifal Organised Phonology Data (Manuscript), Boush, Al (compiler), 1994, archived fromthe original on 2012-10-11{{citation}}: CS1 maint: others (link)

• Steinkraus, Walter. 1969. 'Tifal phonology showing vowel and tone neutralization.' Kivung 2:1
• Healey, Phyllis, and Walter Steinkraus. 1972. 'A Preliminary Vocabulary of Tifal with Grammar Notes.' Language Data Microfiche AP 5, S.I.L., Huntington Beach, v + 117 pp. ISBN 0-88312-305-3
• Steinkraus, Walter. 1962–63. Manuscripts. SIL, Ukarumpa.
• Boush, Al. 1974–79. Manuscripts. SIL, Ukarumpa.

• PNG Language Resources: Tifal
• WALS - Tifal
• Tifal on globalrecordings.net
• Missionary video in Tifal
• Tifal Grammar Essentials

• Languages of Sandaun Province
• Languages of Western Province (Papua New Guinea)
• Ok languages

• Pages containing links to subscription-only content
• Language articles citing Ethnologue 18
• Articles with short description
• Short description is different from Wikidata
• Languages which need ISO 639-3 comment
• Pages with plain IPA
• Articles containing Tifal-language text
• CS1 maint: others