Choose passive -w-/-iw-/-ew- for an event performed by an understood or expressed external agent: barua ilisomwa “the letter was read.” Choose stative -ik-/-ek- when the subject permits an action, enters a condition, or is presented in its resulting state without an external agent in the verb’s argument structure: barua inasomeka “the letter is readable.” English “be + participle” can translate both, so diagnose the event before translating.
Both constructions are neutral in current (informal) and (formal) Standard Swahili.
Decision tree
Step 1: Are you reporting that somebody did something to the subject?
If yes, choose the passive. The agent may be unnamed, understood, or expressed with na.
Mkataba ulisainiwa jana baada ya pande zote kukubaliana.
The contract was signed yesterday after both sides reached agreement.
The build u-li-saini-w-a presents an actual signing event. Even without a na phrase, a signer is conceptually part of the event.
Step 2: Can you naturally add na + performer?
If the phrase names the doer of the base action, the passive is required.
Mkataba ulisainiwa na wakurugenzi wawili mbele ya mwanasheria.
The contract was signed by two directors in front of the lawyer.
Na wakurugenzi wawili is the passive agent. A stative cannot take this phrase as the suppressed performer.
Step 3: Are you evaluating possibility, ease, resistance, or suitability?
If yes, choose the stative.
Maandishi kwenye mkataba hayasomeki bila miwani.
The writing in the contract is unreadable without glasses.
Negative ha-ya-som-ek-i evaluates readability. It does not say that people refuse or fail to read the writing.
Step 4: Did the subject change or reach a result without an encoded agent?
Choose the stative/inchoative.
Kamba ilikatika tulipovuta sanduku juu ya ngazi.
The rope snapped when we pulled the box up the stairs.
The build i-li-kat-ik-a presents the rope entering a broken state. The pulling event explains the circumstance, but the stative verb does not select a cutter.
The morphology sits in the stem
TAM and subject agreement can be identical while the extension changes the interpretation.
| Base | Stative | Passive | Central contrast |
|---|---|---|---|
| kusoma read | kusomeka | kusomwa | be readable / be read |
| kufunga close | kufungika | kufungwa | close/be closable / be closed by someone |
| kuvunja break | kuvunjika | kuvunjwa | break/enter a broken state / be broken by someone |
| kupinda bend | kupindika | kupindwa | bend/be flexible / be bent by someone |
| kuandika write | kuandikika | kuandikwa | admit being written / be written |
Analytic i-na-som-ek-a and i-na-som-w-a expose the contrast. Normal spelling remains solid: inasomeka, inasomwa. Neither suffix supplies tense, negation, or subject concord.
Matched pair: readable versus being read
Ripoti hii inasomeka vizuri hata kwenye skrini ndogo.
This report is easy to read even on a small screen.
No reading event need be underway. Layout, font, and wording give the report a readable disposition.
Ripoti hii inasomwa na mkaguzi kabla ya kikao cha bodi.
This report is being read by the auditor before the board meeting.
Now i-na-som-w-a presents an ongoing event and na mkaguzi names its agent.
The same contrast survives negation:
Ujumbe haukusomeka kwa sababu picha ilikuwa na ukungu.
The message was illegible because the image was blurred.
Ujumbe haukusomwa kwa sababu uliingia kwenye folda isiyo sahihi.
The message was not read because it went into the wrong folder.
Stative ha-u-ku-som-ek-a denies readability. Passive ha-u-ku-som-w-a denies that a reading event occurred.
Matched pair: a door’s condition versus a closing event
Mlango huu haufungiki vizuri wakati mbao zinapovimba.
This door does not close properly when the wood swells.
The problem is attributed to the door or its circumstances. There is no suppressed negligent closer.
Mlango huu haufungwi na wafanyakazi baada ya saa za kazi.
This door is not closed by the employees after working hours.
The passive describes habitual conduct. The door may be perfectly closable; the workers simply do not close it.
Perfect aspect creates a common ambiguity in English:
Lango limefungika ghafla, hivyo walinzi wamebaki nje.
The gate has shut suddenly, so the guards are stuck outside.
Mlango umefungwa na mlinzi; wageni watumie lango la pembeni.
The door has been closed by the guard; visitors should use the side entrance.
Both results matter now, but only passive u-me-fung-w-a encodes a prior external action. Perfect -me- does not erase the voice distinction.
Deliberately, easily, and suddenly as diagnostics
Adverbs do not mechanically select a suffix, but they reveal the intended event structure.
- Kwa makusudi “deliberately” normally implies an intentional agent and favors a passive when the affected item is subject.
- Kwa urahisi “easily” often evaluates susceptibility and favors a stative.
- Ghafla “suddenly” can foreground an agentless change and favor an inchoative stative.
Kioo kilivunjwa kwa makusudi ili mlango uweze kufunguliwa kutoka ndani.
The glass was broken deliberately so that the door could be opened from inside.
Kioo hiki kinavunjika kwa urahisi kikigongwa pembeni.
This glass breaks easily if it is struck at the edge.
The conditional mentions a causal contact, but ki-na-vunj-ik-a describes the glass’s susceptibility. By contrast, ki-li-vunj-w-a reports a deliberate event.
Agent phrase, cause, and instrument are not the same
A stative may be followed by a cause or circumstance. That does not make the phrase a passive agent.
Waya ulipindika baada ya kugongwa na toroli la mizigo.
The cable bent after being struck by a luggage trolley.
The main stative u-li-pind-ik-a has the cable as its sole core participant. The separate passive infinitive kugongwa inside the causal phrase identifies what happened beforehand.
Waya ulipindwa na fundi kwa kutumia kifaa maalumu.
The cable was bent by the technician using a special tool.
Main passive u-li-pind-w-a licenses agent na fundi and an instrument phrase. The word na elsewhere can mean “with/and,” so the semantic role—not merely the presence of na—is the diagnostic.
Ambiguous results
English “the window is closed” can describe a present configuration without telling how it arose. Swahili must choose a viewpoint. Dirisha limefungika highlights having shut or reached a closed state. Dirisha limefungwa highlights the result of somebody’s closing action, even when the closer is irrelevant.
A perfect passive can therefore sound state-like, but it remains grammatically passive. Conversely, not every plausible -ik-/-ek- form is established. Lexical convention decides whether a stative exists and which potential or result meanings it carries.
Short dialogue: diagnosing a door
—Kwa nini mlango huu uko wazi? Haufungiki? —Unafungika vizuri; haukufungwa na mlinzi jana. —Basi umwombe aufunge sasa.
'Why is this door open? Won't it close?' 'It closes properly; it wasn't closed by the guard yesterday.' 'Then ask him to close it now.'
The first speaker tests a property with haufungiki. The response confirms unafungika and then reports the missing event with passive haukufungwa na mlinzi.
Register
Both forms are ordinary across registers. Potential statives such as inaeleweka “is understandable” and inatekelezeka “is implementable” are frequent in (formal) and (academic) evaluation. Passives are frequent in reports and procedures because an event matters while the agent may be unknown or backgrounded. These frequency tendencies do not change the grammatical diagnostics.
For the complete formation rules, continue with passive formation, stative formation, and the deeper stative-versus-passive contrast.
Common Mistakes
Adding an agent to a stative
❌ Makala ilisomeka na wahariri wawili kabla ya kuchapishwa.
Incorrect for an actual reading event — stative someka cannot take wahariri as its agent.
✅ Makala ilisomwa na wahariri wawili kabla ya kuchapishwa.
The article was read by two editors before being published.
Using passive for an inherent difficulty
❌ Anwani hii haiandikwi kwa urahisi kwa sababu ni ndefu.
Wrong for the intended property — passive says people do not write it.
✅ Anwani hii haiandikiki kwa urahisi kwa sababu ni ndefu.
This address is not easy to write because it is long.
Treating perfect forms as equivalent
❌ Kikombe kimevunjwa kilipoanguka chenyewe kutoka mezani.
Wrong viewpoint — passive still presents an external breaking event.
✅ Sahani imevunjika ilipoanguka kutoka kabatini.
The plate broke when it fell from the cupboard.
Omitting TAM because the extension looks verbal enough
❌ Kesho daraja jipya jengweka kwa urahisi.
Incorrect form and architecture — the stative does not replace future marking, and jengweka is not the established form.
✅ Kesho mlango wa nyuma utafungika vizuri baada ya bawaba kutiwa mafuta.
Tomorrow the back door will close properly after the hinges are oiled.
Key Takeaways
- Passive morphology presents an externally caused event and can license na + agent.
- Stative morphology presents possibility, susceptibility, spontaneous change, or a resulting state without an external-agent argument.
- Perfect aspect may make both forms result-relevant, but it does not remove their voice contrast.
- Causes and circumstances may accompany a stative; they are not thereby passive agents.
- Choose from argument structure and intended interpretation, not from English “is/was ...ed.”
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Start learning Swahili →Related Topics
- kuwa na or kuna?A2 — Choose possession with subject-agreeing kuwa na or existence with locative kuna by identifying the clause's grammatical viewpoint.
- Forming the PassiveB1 — Form Standard Swahili passives with -w-, -iw-, and -ew- while preserving TAM and making the promoted participant control subject agreement.
- Passive Agents with naB1 — Add an optional passive agent with na, distinguish that agent from an instrument, and choose active voice when responsibility must be unmistakable.
- Forming the Stative in -ik-/-ek-B1 — Form Swahili statives with -ik-/-ek- to express potential, spontaneous result, and an intransitive state without an external agent.
- Stative versus PassiveB2 — Distinguish stative possibility or spontaneous state from a passive event with an understood or expressed agent.
- Inchoative and Result-State UsesC1 — Interpret stative verbs as changes into a condition, resulting states, susceptibilities, or established lexical properties.