Some analyses present /tʃ/ as an eighth phoneme, although its distribution is predictable. [tʃ] and in some cases /r/ are positional variants of /t/, as described in the table below.
Word-initially [r] may be heard in place of expected [t] in rapid speech if the previous word ends in a vowel. In no environment do more than three phonemes contrast, meaning that a fourth oral coronal /tʃ/ is not required. [tʃ] only occurs following high vowels /i/ or /u/ (e.g. [putʃwapu] 'lazy') where it can be seen as an allophone of /t/. In most environments only two phonemes contrast, suggesting that /r/ only recently diverged from /t/.
The glides [j w] occur as allophones of /i u/, e.g. /iapu/ [japu] 'Sepik river', /uəla/ → [wəla] 'house'.
Grammar
Unlike other Sepik languages, Namia has an inclusive-exclusive distinction for the first-person pronoun, which could possibly be due to diffusion from Torricelli languages. Inclusive-exclusive first-person pronominal distinctions are also found in the Yuat languages and Grass languages.
Vocabulary
The following basic vocabulary words are from Foley (2005) and Laycock (1968), as cited in the Trans-New Guinea database:
123Foley, William A. (2018). "The Languages of the Sepik-Ramu Basin and Environs". In Palmer, Bill (ed.). The Languages and Linguistics of the New Guinea Area: A Comprehensive Guide. The World of Linguistics. Vol.4. Berlin: De Gruyter Mouton. pp.197–432. ISBN978-3-11-028642-7.
↑Foley, W.A. "Linguistic prehistory in the Sepik-Ramu basin". In Pawley, A., Attenborough, R., Golson, J. and Hide, R. editors, Papuan Pasts: Cultural, linguistic and biological histories of Papuan-speaking peoples. PL-572:109-144. Pacific Linguistics, The Australian National University, 2005.