Yoruboid languages

Yoruboid is a language family composed of the Igala group of dialects spoken in south central Nigeria, and the Edekiri languages subdivided into the Ede group spoken in a band across Togo, Ghana, Benin and southern Nigeria, and the Itsekiri group of the Warri Kingdom in the northwestern Niger-Delta.

Name

The name Yoruboid derived from its most widely spoken member, Yoruba, which has around 55 million primary and secondary speakers. Another well-known Yoruboid language is Itsekiri. The Yoruboid group is a branch of Defoid, which also includes the Akoko and Ayere-Ahan languages.
The term Defoid itself is a derivative combination using the elements ede, "Ife", a city of profound cultural significance to speakers of the diverse lects, and -oid, a suffix meaning 'to be like' or 'in the same manner as'. The Defoid group itself is a branch of the Benue–Congo subfamily of the wider Niger–Congo family of languages.
All Yoruboid languages are tonal, with most of them having three level tones. Grammatically, they are isolating with a subject–verb–object basic word order and share significant degrees of both structural and lexical similarities.

Languages

Igala is a key Yoruboid language, spoken by 1.6 million people in the Niger-Benue confluence of central Nigeria; it is excised from the main body of Yoruboid languages to the west by Ebira and the northern Edoid languages. Igala is closely related to both Yoruba and Itsekiri languages.
The Itsekiris are a riverine Yoruboid people who live in the Niger Delta region of Nigeria. They maintain a distinct identity separate from other Yoruboid people but speak a very closely related language. Their neighbouring languages are the Urhobo, the Okpe, the Edo, the Ijo, and the Mahin / Ugbo, Yoruba dialects spoken in neighbouring Ondo State.

Subdivisions

* - All dialects in the Ede cluster share between 85 and 95% lexical similarity and are thus all mutually intelligible without needing different specialized literature to achieve universal understanding.
** - Itsekiri is actually most closely related to SEY, and is a divergent branch thereof, but has a different standard writing orthography.
*** - Some scholars classify Olukumi as separate variant of Nuclear Yoruba, and others as a dialect of SEY.

Names and locations

Below is a list of selected Yoruboid language names, populations, and locations from Blench.

Language	Dialects	Alternate spellings	Own name for language	Endonym	Other names	Other names for language	Exonym	Speakers	Location
Ulukwumi		Olukumi, Unukwumi						20,000	Delta State, Aniocha and Oshimili LGAs
Igala	Ánkpa and Ògùgù in Ankpa LGA; Ìfè in Ankpa and Dekina LGAs; Ànyìgbá in Dekina LGA; ‘Idáh and Ìbàjì in Idah and Anambra LGAs; and Èbú in Oshimili LGA						Igara	295,000, 800,000	Benue State, Ankpa, Dekina, Idah and Bassa LGAs; Edo State, Oshimili LGA; Anambra State, Anambra LGA
Iṣẹkiri		Itsekiri, Ishekiri, Shekiri, Chekiri, Jekri, Izekíri, Tshekeri, Dsekiri				Iwere, Irhobo, Warri	Iselema–Otu, Selemo	33,000 ; over 100,000 ; 500,000	Delta State, Warri, Bomadi and Ethiope LGAs
Yoruba	Many dialects		Yorùbá	Yorùbá	Aku, Akusa, Eyagi, Nago			5,100,000, 15,000,000, 50,000,000	Most of Kwara, Lagos, Osun, Oyo, Ogun, Ekiti and Ondo States; western LGAs in Kogi State; and into Benin Republic, Togo and Ghana. Yoruba is spoken as a ritual language in Cuba and Brazil