Likely derived from Proto-Edekiri *i-wĩ́, compare with Proto-Yoruba *i-wĩ́ (Central Yoruba and Olukumi), also see Olukumi íwín. It is unclear but possible that this is also attested in NWY, or it is possible it is related to imí. The term "imi," has a much wider etymology with cognates found throughout Volta-Niger, so it is unlikely that only NWY maintained the word. While such a term is not attested in Igala, the term for the dung beetle, Igala ákítọ̀wúnyí may possibly suggest the root "yí" is of Proto-Yoruboid origin. See yímíyímí. Perhaps also related to Igbo oyī (“ugly, nauseating”).