Koshin is a Southern Bantoid language of Cameroon. It is traditionally classified as a Western Beboid language, but that has not been demonstrated to be a valid family.
"Koshin" is the name of the village the language is spoken in.
Koshin is most closely related to Bukwen.Blench, Roger. 2025. The classification of the Bukwen language [buz spoken in Mairogo, SE Nigeria]. Cambridge: Kay William Educational Foundation (KWEF).
Phonology + Koshin Consonant PhonemesGood, Jeff and Lovegren, Jesse and Mve, Jean Patrick and Tchiemouo, Nganguep Carine and Voll, Rebecca and Di Carlo, Pierpaolo. 2011. The languages of the Lower Fungom region of Cameroon: Grammatical overview. Africana Linguistica 17. 101–164.LabialDentalPalatalVelarNasalmn̪ɲŋPlosivevoicelesst̪kvoicedbd̪gAffricatevoicelesst̪s̪tʃkpvoicedd̪z̪dʒgbFricativevoicelessfs̪ʃvoicedz̪ʒApproximantl̪jw + Koshin Vowel PhonemesFrontCentralBackLess roundedPlainLess roundedPlainClosei̜iɨ̜u̜uClose-mideəOpen-midɛɔOpenæa There are three tones; high, mid, and low.
References
Blench, Roger, 2011. 'The membership and internal structure of Bantoid and the border with Bantu'. Bantu IV, Humboldt University, Berlin. Good, Jeff, & Jesse Lovegren. 2009. 'Reassessing Western Beboid'. Bantu III. Good, Jeff, & Scott Farrar. 2008. 'Western Beboid and African language classification'. LSA.