Igboid languages

Igboid
Geographic distribution:	South central Nigeria, lower reaches of the Niger River and east, south the Benue
Linguistic classification:	Niger–Congo Atlantic–Congo Volta–Niger YEAI Igboid
Subdivisions:	Igbo Ekpeye
Glottolog:	igbo1258[1]

Igboid languages constitute a branch of the Volta–Niger language family. It includes Ekpeye, Ukwuani, and the Igbo languages:

• Ekpeye
• Igbo: Igbo proper, Ikwerre, Ika, Izii–Ikwo–Ezza–Mgbo, and Ogba.

Williamson and Blench conclude that the Igbo languages (Igboid apart from Ekpeye) form a "language cluster" and that they are somewhat mutually intelligible.^[2] However, mutual intelligibility is only marginal, even among the Izii–Ikwo–Ezaa–Mgbo languages.^[3]

References

1. Nordhoff, Sebastian; Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2013). "Igboid". Glottolog. Leipzig: Max Planck Institute for Evolutionary Anthropology.
2. Williamson, Kay; Roger M. Blench (2000). African languages: an introduction. Cambridge University Press.