Ukaan (also Ikan, Anyaran, Auga, or Kakumo) is a poorly described Niger–Congo language or dialect cluster of uncertain affiliation.
Blench (2012) states that "noun-classes and concord make it look Benue-Congo, but evidence is weak.
Ukaan has several divergent dialects: Ukaan proper, Igau, Ayegbe (Iisheu), Iinno (Iyinno), which only have one-way intelligibility in some cases.
Roger Blench (2005, 2019)[6] considers Ukaan to consist of at least 3 different languages, and notes that Ukaan varieties spoken in Ìshè,̣ Ẹkakumọ, and Auga all have different lexemes.
Blench (2019) lists Ondo State, Akoko North LGA, towns of Kakumo–Aworo (Kakumo–Kejĩ, Auga and Iṣe); Edo State, Akoko Edo LGA, towns of Kakumo–Akoko and Anyaran.