From Proto-Igboid *ɓʊ́-ŋ̀-kʷʊ́. Cognate with Ekpeye ɔ́hʷʊ́, Ogbah ɛ́kʷʊ́, Ezaa ŋ́kfʊ́, Izi ḿpfʊ́, Ukwuani-Aboh-Ndoni ɛ́kʊ́.[1]
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