Causatives and Causee Marking | Swahili Grammar

A causative adds a participant at the top of a clause: the causer becomes subject, while the original subject becomes the causee. With an intransitive base this often produces an ordinary transitive clause. With a transitive base, however, both the causee and the original object remain semantically relevant, creating competition for object position and object marking.

English spreads these roles across separate words—“The teacher made the pupils read the poem.” Swahili can package subject agreement, TAM, one object marker, the root, and causative morphology into one finite word. Correctly interpreting that word requires asking who causes, who performs or undergoes the base event, and what other theme is affected.

Intransitive base: the causee becomes the object

Start with underived lala “sleep.”

Mgonjwa alilala baada ya kutumia dawa.

The patient fell asleep after taking the medicine.

The patient is subject of a-li-lal-a. Causative laza adds a nurse as causer:

Muuguzi alimlaza mgonjwa baada ya kumpa dawa.

The nurse put the patient to bed after giving him medicine.

The build is a-li-m-laz-a. The new causer muuguzi controls subject marker a-; the original subject mgonjwa is now an object, indexed by human singular -m-.

The same alternation appears with cheka → chekesha:

Hadithi hiyo iliwachekesha wageni wote wakati wa chakula.

That story made all the guests laugh during the meal.

Class 9 hadithi controls i- in i-li-wa-chek-esh-a. The causee wageni is plural human and triggers -wa-; a nonhuman causer is entirely possible.

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Do not look for “the doer” and assume it is the subject. In a causative, the subject is the initiator of the larger causing event; the causee is the participant associated with the base verb.

Human causees and the object marker

Standard Swahili strongly favors an object marker for a specific animate object even when the full noun phrase is also present. Causative causees are therefore frequently doubled by -m- or -wa-.

Causee	Object marker	Finite build
mtoto, one child	-m-	a-li-m-laz-a
watoto, children	-wa-	a-li-wa-chek-esh-a
Asha	-m-	ni-li-m-shon-ish-a
wafanyakazi, workers	-wa-	a-li-wa-ham-ish-a

Meneja aliwahamisha wafanyakazi wale kwenda ofisi mpya.

The manager transferred those employees to the new office.

In a-li-wa-ham-ish-a, -wa- refers to the specific employees. The causative stem hamisha is transitive even though base hama “move away” is intransitive.

With nonhuman affected objects, object marking is more sensitive to definiteness and discourse prominence:

Mvua kubwa ilijaza bwawa ndani ya saa mbili.

Heavy rain filled the reservoir within two hours.

Here class 5 bwawa is overt but not indexed on i-li-jaz-a. If that reservoir is already topical, mvua ililijaza can index it with class 5 -li-.

Transitive base: causee plus original theme

An underived transitive has an agent and a theme:

Wanafunzi walisoma shairi hilo kwa sauti.

The students read that poem aloud.

Causativizing soma adds a teacher while preserving both the student causees and the poem:

Mwalimu aliwasomesha wanafunzi shairi hilo kwa sauti.

The teacher made the students read that poem aloud.

The build a-li-wa-som-esh-a indexes the human causee with -wa-. Wanafunzi is the causee; shairi hilo is the original theme of reading. The two postverbal noun phrases are not interchangeable labels: their roles come from animacy, lexical meaning, context, and ordering.

Swahili finite verbs normally provide one ordinary object-marker slot. The language does not simply insert one marker for the causee and another for the original theme.

Mwalimu aliwasomesha kifungu kile mara mbili.

The teacher made them read that passage twice.

In a-li-wa-som-esh-a, -wa- is the causee; the overt class 7 theme kifungu kile remains unindexed. If both participants need repeated pronominal reference, speakers often retain one noun phrase, use a passive, or split the information across clauses rather than building two object markers into one verb.

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The causative increases semantic valency, but it does not create a second object-marker slot. Choose the marker that fits the discourse-prominent licensed object—very often a specific human causee—and express the other participant overtly.

Causee as an oblique with kwa

When the original verb is transitive and the causee is an independent service provider or agent, a kwa phrase can keep the original theme as the central object. This is especially natural with commissioned work.

Nilitengenezesha saa yangu kwa fundi wa mjini.

I had my watch repaired by a repairer in town.

Ni-li-tengenez-esh-a presents saa yangu as the thing whose repair is arranged. Kwa fundi identifies the delegated causee/performer without competing for the verb’s object position.

Compare a clause that makes the human causee central:

Nilimshonisha Amina shati la sherehe.

I had Amina sew a shirt for the celebration.

Ni-li-m-shon-ish-a indexes Amina as causee, and shati remains the theme of sewing. This version is appropriate when Amina’s participation matters; nilishonisha shati kwa Amina foregrounds the commissioned shirt instead.

This alternation is not identical to English case marking. Kwa has many functions, so the lexical causative and context must support the causee reading.

Passive causatives and promotion

Passive morphology follows the causative stem and changes which noncauser is subject.

Wanafunzi walisomeshwa shairi jipya na mwalimu wao.

The students were made to read a new poem by their teacher.

Wa-li-som-esh-w-a contains causative before passive. The causees wanafunzi are promoted to subject; the causer is demoted to na mwalimu wao. The original theme shairi jipya remains postverbal.

Saa yangu ilitengenezeshwa kwa fundi niliyependekezewa na jirani.

My watch was sent to be repaired by a repairer recommended to me by a neighbor.

I-li-tengenez-esh-w-a promotes the theme because the repair arrangement is the discourse focus; kwa fundi retains the commissioned performer. This heavier form is natural in (formal) explanations of arrangements but conversation often prefers an active clause.

For dense combinations and their scope, see causatives with applicative and passive.

Register and information structure

Human object doubling and ordinary causatives are neutral in (informal) and (formal) Standard Swahili. Causee phrases with kwa are particularly useful in service transactions and (formal) reporting because they disambiguate the commissioned agent. Dense passive causatives occur in careful (formal) and (academic) prose; speakers often unpack them conversationally when several participants would otherwise compete.

Common Mistakes

Keeping the causee as a second subject

❌ Mwalimu waliwasomesha wanafunzi shairi.

Incorrect agreement — the singular teacher, not the plural causees, controls the subject marker.

✅ Mwalimu aliwasomesha wanafunzi shairi.

The teacher made the students read a poem.

Omitting the marker for a specific human causee

❌ Muuguzi alilaza mgonjwa yule.

Nonstandard/marked for the intended specific human object — object marking is expected here.

✅ Muuguzi alimlaza mgonjwa yule.

The nurse put that patient to bed.

Trying to mark both objects inside the verb

❌ Mwalimu aliwakisomesha wanafunzi kifungu.

Incorrect — do not stack -wa- and -ki- as two ordinary object markers.

✅ Mwalimu aliwasomesha wanafunzi kifungu.

The teacher made the students read a passage.

Treating kwa as a passive agent in every clause

❌ Jua lilikauka mashuka kwa upepo.

Incorrect causative choice and unclear participant structure.

✅ Jua na upepo vilikausha mashuka.

The sun and wind dried the sheets.

Key Takeaways

The added causer becomes subject; the base subject becomes the causee.
With intransitive bases, the causee is commonly the single object.
With transitive bases, causee and original theme remain, but the verb normally has one object-marker slot.
Human causees favor object marking; commissioned performers can be expressed with kwa.
Passive causatives promote a causee or theme according to lexical and discourse structure.

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