Modern Hausa verb grades are identified partly by tone and final vowel: familiar patterns include Grade 4 -e, Grade 6 -o, and Grade 7 -u, plus the object-conditioned -a/-e/-i pattern of Grade 2. These vowels do not all have one historical source. Comparative and internal evidence points to at least two layers: old lexical vowel classes among basic verbs, and formerly fuller derivational extensions whose consonants were often lost. The modern phonological baseline is set out in tone and vowel length in verb morphology.
This is an academic page. Reconstructions are hypotheses, not spellings that learners should pronounce as modern Hausa. Ordinary boko examples below contain no tone or vowel-length marks; reconstructed forms are described with an asterisk and in prose. Scholars disagree on some details, and those disagreements are stated explicitly.
The modern grade table is synchronic first
For present-day use, the safest facts are the current paradigms.
| Class | Characteristic modern ending | Broad status |
|---|---|---|
| Grade 1 | -a, with object-conditioned length/tone | basic or derived/applicative-shaped |
| Grade 2 | A -a, B -e, C -i | basic transitive class |
| Grade 3 | -a | basic intransitive class in the traditional system |
| Grade 4 | -e | derived totality/separative extension |
| Grade 5 | -ar, short forms, and -she object forms | derived causative family |
| Grade 6 | -o | derived ventive |
| Grade 7 | -u | derived resultative/sustentative intransitive |
History can explain why this inventory has “ragged edges,” but it does not replace the paradigm. A speaker chooses sayi, saye, sayo, sayu from modern lexical and syntactic knowledge, not by reconstructing Proto-Chadic during conversation.
Jiya na sayi littafi a kasuwa.
Yesterday I bought a book at the market. (Grade 2 before a noun object)
Littafin ya yi arha, don haka na saye shi.
The book was inexpensive, so I bought it. (Grade 2 before a direct-object pronoun)
Na sayo littafin domin mu karanta shi tare.
I bought the book and brought it back so that we could read it together. (Grade 6 derivative)
Basic verbs preserve old lexical vowel classes
One influential reconstruction treats early Hausa basic verbs as complete lexical forms belonging to vowel-and-tone classes. A fundamental contrast was between a-final verbs and non-low-vowel verbs, the latter often reconstructed with a central vowel and reflected as i or u. On this account, the opposition behind familiar Grade 1 versus Grade 2/3 families was originally lexical, not a set of transparent semantic suffixes.
This helps explain why modern basic-grade meaning is often arbitrary. Grade 1 and Grade 2 contain large lexical sets; their final vowels do not contribute one reliable meaning comparable to ventive Grade 6. It also explains why monosyllabic verbs retain idiosyncratic final vowels so stubbornly: ja, sha, ci, bi, and ji preserve lexical information not reducible to a single modern suffix.
Ka ja igiyar a hankali.
Pull the rope gently. (basic monosyllabic ja)
Yaron ya bi ɗan’uwansa har zuwa kasuwar mako.
The boy followed his brother all the way to the weekly market. (basic monosyllabic bi)
Mun sha ruwa kafin muka ci abinci.
We drank water before we ate. (lexically distinct monosyllabic vowels)
Cross-Chadic comparison supports an old contrast between low a and a non-low final vowel, but the exact Proto-Chadic vowel inventory remains debated. Some reconstructions posit more vowels; more radical analyses reduce the system to a versus a central vowel, or emphasize prosodic conditioning. Therefore “Grade 2 comes from *ə-verbs” is a useful scholarly model, not a directly observed historical recording.
Grade 2 -i may preserve something older than citation -a
Modern Grade 2 shows -a with no following object, -e before a direct-object pronoun, and -i before a noun object. In the lexical-vowel-class analysis, the -i C-form reflects the older non-low vowel more directly, while citation-form -a is a later replacement in a particular environment.
The Grade 2 singular imperative also ends in -i, as in sayi! “buy!” Two historical explanations compete:
- the imperative -i preserves the old lexical final vowel of the class;
- it reflects a widespread Chadic imperative suffix -i.
Both analyses have comparative motivation. The modern learner's rule is unaffected: use the attested Grade 2 imperative and object-conditioned forms. It would be false precision to present either historical proposal as settled fact.
Sayi maganin kafin kantin ya rufe!
Buy the medicine before the shop closes! (masculine singular imperative)
Ta sayi maganin jiya, amma ba ta saye shi a nan ba.
She bought the medicine yesterday, but she did not buy it here. (C-form sayi versus B-form saye)
Derived-grade vowels continue reduced extensions
An influential diachronic account reconstructs the derived grades as extensions superimposed on complete lexical verb stems, rather than as meaningless swaps of a final vowel. In many modern polysyllabic verbs, only tone and the characteristic termination identify the extension. Monosyllabic verbs instead use expanded shapes containing n/y or w. Those segments are important historical evidence, but they are not all equally secure remnants of one ancient CV suffix: some analyses treat particular glides as hiatus-breaking transitions or later analogical reshaping.
| Modern relation | Historical clue | Cautious interpretation |
|---|---|---|
| ci → cinye “eat up” | the Grade 4 monoverb allomorph is -nye, not bare -e | possible preservation or reshaping of a fuller totality extension |
| sha → shawo “overcome” and related -o forms | w appears between the base vowel and Grade 6 -o | expanded allomorph; the glide alone does not prove one reconstruction |
| sha → shawu in technical Grade 7 discussion | w appears before Grade 7 -u | another monoverb expansion relevant to, but not decisive for, reconstruction |
The exact segmental reconstruction is not equally secure for every extension. Modern -e, -o, -u should therefore not be taught as if each had always been a standalone one-vowel suffix—or as if every modern n/y/w were certainly ancient. Tone is part of the morphology too, and analogy has remodeled many forms.
Yaran sun cinye abincin kafin baƙi su iso.
The children ate up the food before the guests arrived. (Grade 4 totality relative of ci)
Mun shawo kan matsalar bayan doguwar tattaunawa.
We overcame the problem after a long discussion. (lexicalized expression with shawo kan)
Grade 5 retains unusually visible consonantal history
Grade 5 is exceptional because its termination is not merely a vowel. Historical work reconstructs a causative suffix ending in s. Modern Nigerian Standard commonly has -ar in the long form followed by da, while -she before certain pronoun objects retains a sibilant more visibly. Western and northern dialect histories show other outcomes.
Ta sanar da ma’aikata sabon tsarin.
She informed the employees about the new system. (long Grade 5 form with da)
Ta gaishe su kafin taron ya fara.
She greeted them before the meeting began. (-she pronoun-object form)
The relation among historical s, modern r/d, da, short Grade 5 forms, and -she has attracted competing segmentations. Some analyses treat da as historically connected to the extension; synchronic grammar treats it as a separable particle in the productive long construction. A historical source should not be turned into the modern spelling sanarda.
Sayo across four modern environments
Grade 6 illustrates how a historically derived vowel becomes a stable modern paradigm. Sayo contrasts with basic Grade 2 saya/sayi/saye, but within Grade 6 its long -o remains across the object environments.
| Environment | Example | Modern fact |
|---|---|---|
| no following object | Na je kasuwa na sayo. | purchase is understood |
| noun direct object | Na sayo littafi. | invariant -o before noun object |
| direct-object pronoun | Na sayo shi. | invariant -o before pronoun |
| indirect object | Na sayo mata littafi. | mata is beneficiary; littafi is theme |
Na je kasuwa da safe na sayo, amma na manta rasidin.
I went to the market in the morning and bought it back, but I forgot the receipt. (no following object)
Na sayo sabuwar fitila domin ɗakin karatu.
I bought and brought back a new lamp for the study. (noun direct object)
Fitilar ta yi kyau, shi ya sa na sayo ta.
The lamp was attractive, so I bought and brought it back. (direct-object pronoun)
Na sayo wa kakata rediyo mai sauƙin amfani.
I bought and brought my grandmother an easy-to-use radio. (noun indirect object with wa)
The historical extension helps explain the family saya → sayo, but it does not authorize every imaginable base-plus-o form. Modern productivity is constrained by attestation, meaning, and lexical convention.
Not every final-vowel alternation is derivational
Three distinct mechanisms must not be collapsed:
- lexical class: the inherited final-vowel identity of a basic verb;
- derivational extension: a grade such as ventive -o or resultative -u changes the lexeme;
- object-conditioned form: A/B/C/D alternation changes the surface form required by syntax without choosing a new lexical meaning.
Recent synchronic accounts analyze A/B/C alternations through prosodic domains: a direct-object pronoun behaves closely with the verb, a noun object occupies a following phrase, and an objectless verb is phrase-final. Such an account explains the modern distribution without claiming that speakers add and delete ancient suffixes online. Diachronic and synchronic analyses can both be valuable because they answer different questions.
Practice
For saya/saye/sayi/sayo, label each contrast as object-conditioned or derivational. Saye shi versus sayi littafi stays within Grade 2; saya versus sayo changes the derivative. Then explain why Grade 2 imperative sayi! has two historical analyses but only one modern form to learn.
Common Mistakes
1. Treating every final vowel as the same kind of suffix.
❌ I, e, o, da u duk suna da tushe da aiki iri ɗaya a tarihin fi’ili.
Incorrect claim—basic lexical vowels, object-conditioned alternants, and derived extensions have different histories.
✅ Sayi littafi, sannan ka sayo shi gida.
Buy a book, then buy it and bring it home. (Grade 2 C-form versus Grade 6 derivative)
2. Presenting a reconstruction as modern spelling.
❌ Dole a rubuta tsohon baƙin da ake tsammani a cikin kowace kalmar zamani.
Incorrect—reconstructed consonants are analytical hypotheses, not additions to standard boko.
✅ Yaran sun cinye tuwon duka.
The children ate all the tuwo. (normal modern spelling)
3. Selecting a final vowel by tense.
❌ Sayo shi ne sigar da ta wuce ta saya.
Incorrect—sayo is a ventive derivative, not the past tense of saya.
✅ Gobe zan sayo magani daga kasuwa.
Tomorrow I will buy medicine and bring it back.
4. Claiming one settled origin for Grade 2 imperative -i.
❌ Babu wata muhawara: i ta umarni ta fito daga hanya guda kawai.
Incorrect—retention of a lexical vowel and an old imperative suffix are competing analyses.
✅ Sayi tikitin yanzu kafin farashin ya tashi!
Buy the ticket now before the price rises! (the modern imperative is certain even where its history is debated)
Key Takeaways
- Basic Hausa verbs reflect old lexical vowel-and-tone classes; not every final vowel began as a transparent derivational suffix.
- Derived Grades 4–7 probably continue fuller extensions whose consonants were often lost, leaving tone and final vowels.
- Monosyllabic derivatives preserve especially useful segmental clues, but individual reconstructions remain hypotheses.
- Grade 5 preserves conspicuous consonantal history in -ar, da, and -she patterns.
- The source of Grade 2 imperative -i is debated; the modern paradigm is not.
- Keep lexical history, derivational grade choice, object-conditioned form, and TAM as four separate analytical layers.
Related Topics
- Tone and Vowel Length in Verb MorphologyA2 — Hear the tone and final-vowel length patterns that distinguish Hausa verb grades and object environments even when ordinary boko hides them.
- Base Form, Before-Noun Form, and Before-Pronoun FormA2 — Relate practical Hausa verb-form labels to the traditional A, B, and C object environments without confusing citation form, tense, and verbal nouns.
- What a Hausa Verb Grade Is—and Is NotA2 — Understand Hausa verb grades as lexical morphophonological patterns shaped by meaning, valency, and the following object environment—not as tense conjugations.
- Monosyllabic VerbsC1 — Master the small high-frequency class of one-syllable Hausa verbs without inventing object alternations, verbal nouns, or derived-grade paradigms.
- Grade 5 Causatives: OverviewB2 — Understand Grade 5 as an all-high transitive extension with causative, transfer, and outward-result meanings—not a universal translation of English make.
- Grade 6 Ventive: OverviewB2 — Use established all-high -o verbs for motion, action, or effects oriented toward a contextually chosen deictic center.