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Yoruba linguistic data
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Common questions about Yoruba
What linguistic data does this Yoruba page show?
Word order, tone system, gender count, case marking, adposition direction, syllable structure, consonant inventory traits, vowel system (including nasal vowels), morphological alignment, script, register stratification, speaker count, and geographic area. Each row is one feature with Yoruba's value visible; you can add other languages to read the same feature side by side.
Where do the Yoruba data points come from?
Typological features are merged from URIEL+ (Mortensen et al.) and a curated set authored against descriptive grammars. Speaker counts come from Ethnologue and Glottolog. Geographic area is computed from the Asher 2007 world language atlas. Similarity scores combine genetic distance, typological overlap, and lexical-borrowing data.
How do Yoruba tones work?
Yoruba has three lexical tones (high, mid, low) on every syllable. Mid is unmarked in writing; high uses an acute accent (á, é); low uses a grave (à, è). Minimal pairs depend on tone alone — okó 'hoe' (high), ọkọ̀ 'vehicle' (low), oko 'farm' (mid). Tone also signals grammatical contrasts on verb stems.
Why is Yoruba culturally important in the Americas?
The Atlantic slave trade brought large numbers of Yoruba speakers (especially in the 19th century) to Cuba, Brazil, Trinidad, and other parts of the Americas. Yoruba religious traditions transformed into Lucumí (Cuban Santería), Candomblé (Brazil), and others, with Yoruba liturgical vocabulary preserved across generations. Yoruba-derived loanwords are present in Caribbean Spanish and Portuguese.
Why does Yoruba cluster with Igbo or Twi on similarity scores?
All three are Niger-Congo languages of West Africa, sharing SVO order, tonal phonology, and a chunk of typological features (no inflectional agreement, isolating-agglutinative blend, classifier-like noun marking). Genetic ancestry pulls Yoruba closer to other Volta-Niger languages. The factor breakdown chip on the row tells you which dimensions contributed most.
Sources for Yoruba
The grammatical descriptions on this page are informed by the following published reference and descriptive grammars. Grammatical facts themselves are not subject to copyright; the scholars who documented them deserve attribution.
- Adesola, O. (n.d.). Yorùbá: A Grammatical Sketch. Manuscript. [HTS, tones, pronouns, TAM, SVCs, focus]
- Adesola, O. & Safir, K. (2005). "Referential dependencies in Yoruba." Manuscript. [logophors, anaphora]
- Aboh, E.O. (2010). "The Morphosyntax of the Noun Phrase." In E. Aboh & J. Essegbey (eds.), Topics in Kwa Syntax. Springer. [NP structure, àwọn plural]
- Akinwande, D. (2025). "Focus in Ohori Yoruba." [focus marker variation]
- Babarinde, O. & Ahamefula, N. (2013). "Tonal Sandhi in the Yoruba Language." Research on Humanities and Social Sciences 3(12): 133–136. [step 15: monosyllabic L-verb → M before noun object; object-pronoun tonal polarity; floating-tone docking]
- Balogun, B. (2021). Examining Evidence for Passive in Yoruba. MA dissertation, University of Cape Town. [passive, nipase / láti ọwọ́ agent phrase]
- Bamgbose, A. (1966). A Grammar of Yoruba. Cambridge University Press. [local PDF, primary-source-verified: §1.43 pp. 8–10 assimilated low tone; §D4.41–D4.42 pp. 82–83 Class I/II verb tone sandhi (step 15); p. 3 "only Active Voice" (Gaye & Beecroft quote, traditional no-passive stance); §E5.11 p. 103 a- as nominalising prefix (distinct morpheme from Balogun's expletive pronoun a)]
- Bisang, W. & Sonaiya, R. (1999/2000). "Information structuring in Yoruba." Linguistics 38.1. [focus / topic]
- Orie, O.O. & Pulleyblank, D. (1998). "Yoruba Vowel Elision: Minimality Effects." ROA-290 manuscript (also 2002 NLLT 20:101–156). [vowel elision, prosodic minimality]
- Rowlands, E.C. (1993). Teach Yourself Yoruba. Hodder & Stoughton. [pedagogical reference — local PDF]
- Awobuluyi, O. (1978). Essentials of Yoruba Grammar. Oxford University Press. [splitting verbs — local PDF]