Se-Passive (Passiva Pronominal) | Portuguese (Portugal) Grammar

Walk past any Portuguese shop window, open any classifieds page, or read any cookery book and you will meet a construction found nowhere in English: the passiva pronominal, or se-passive. It looks deceptively simple — a verb plus the clitic -se, with a noun nearby — but it behaves as a passive in disguise. Vende-se a casa means "the house is for sale / the house is sold," not "the house sells itself." The verb agrees with the noun that follows, which is the semantic patient: vende-se livro if there is one book, vendem-se livros if there are many. Learning to hear and produce this construction correctly is a hallmark of stepping beyond textbook Portuguese into real-world Portuguese.

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The headline rule: the verb agrees with the patient. Vende-se casa — singular. Vendem-se casas — plural. The classical grammar is strict; colloquial speech blurs it (see below).

The core pattern

Slot	What fills it	Example
Verb + -se	Any transitive verb, enclitic -se attached	Vendem-se
Patient	The thing acted upon — singular or plural	livros
Optional location / complement	Where, how, when	nesta loja

Vendem-se livros nesta loja.

Books are sold in this shop.

Aluga-se quarto perto da universidade.

Room for rent near the university. (singular patient — singular verb)

Alugam-se quartos perto da universidade.

Rooms for rent near the university. (plural patient — plural verb)

Construiu-se um novo estádio em Braga.

A new stadium was built in Braga.

Construíram-se novos estádios em várias cidades.

New stadiums were built in several cities.

Planta-se alface no Inverno.

Lettuce is planted in winter.

Plantam-se flores na Primavera.

Flowers are planted in spring.

Every pair here shows the same verb alternating between singular and plural depending on the patient. The agreement is the one rule you cannot ignore.

Enclisis: -se after the verb is the EP default

In European Portuguese, the clitic attaches to the end of the verb (vende-se, alugam-se, construiu-se) in affirmative main clauses. This is enclisis, the EP default. The clitic moves to a pre-verb position (proclisis) after certain triggers — negation, question words, subordinating conjunctions, some adverbs — but in a standalone declarative sentence, the hyphenated form is what you see and hear.

Vendem-se livros.

Books are sold. (enclisis — default affirmative main clause)

Não se vendem livros aqui.

Books are not sold here. (proclisis — negation triggers se before the verb)

Onde se vendem estes livros?

Where are these books sold? (proclisis — question word triggers fronting)

Disseram-me que se vendem livros novos.

They told me new books are sold. (subordinate clause — proclisis)

Sempre se venderam bem estes livros.

These books have always sold well. (some adverbs trigger proclisis)

For the full placement rules, see the dedicated clitic placement page of your grammar. The takeaway for this construction is: enclisis in simple affirmative main clauses, proclisis after negation and subordinators.

What "agreeing with the patient" looks like

The patient — the logical object — is what a traditional English grammar would call the subject of the passive sentence. In vendem-se livros, the grammatical subject is livros, even though it comes after the verb. The verb agrees with it just as it would with any preverbal subject.

Vende-se uma casa perto do rio.

A house is for sale near the river. (singular patient)

Vendem-se várias casas na mesma rua.

Several houses are for sale on the same street. (plural patient)

Bebe-se muita água no Verão.

A lot of water is drunk in summer. (singular patient)

Bebem-se muitos litros de cerveja num jogo.

Many litres of beer are drunk during a match. (plural patient)

Escreveram-se muitos livros sobre o tema.

Many books were written on the subject. (plural patient — plural verb)

Notice that in bebe-se água / bebem-se litros, the patient (água, litros) is triggering the agreement — it is the grammatical subject, even though it follows the verb.

A trap: precisa-se de always stays singular

With verbs that govern a preposition (precisar de, gostar de, necessitar de), the noun that follows is not the grammatical subject — it is a prepositional complement. The construction is therefore impersonal, not passive, and the verb must stay singular regardless of whether the noun is singular or plural.

Precisa-se de um eletricista.

An electrician is needed.

Precisa-se de empregados de mesa.

Waiters are needed. (verb stays singular — empregados follows 'de', so this is impersonal, not passive)

Gosta-se muito de música clássica nesta casa.

Classical music is enjoyed a lot in this house.

Writing precisam-se de empregados is a classic hypercorrection: speakers try to "fix" the singular verb thinking it should agree with the plural noun, but the noun is not the subject. Standard prescriptive grammar, the Ciberdúvidas reference, and every major EP style guide agree: a preposition blocks agreement.

Tense flexibility

The se-passive works across tenses. Pick any tense for the verb, attach -se, and make the verb agree with the patient.

Tense	Example	Translation
Present	Vende-se uma casa.	A house is for sale.
Preterite	Vendeu-se uma casa.	A house was sold.
Imperfect	Vendiam-se muitas casas nos anos noventa.	Many houses were being sold in the nineties.
Future	Vender-se-ão novas propriedades em breve.	New properties will be sold soon. (mesoclisis — see note below)
Conditional	Vender-se-iam mais, se o mercado ajudasse.	More would be sold if the market helped.
Compound pret. perfect	Têm-se vendido muitos livros.	Many books have been sold (lately).

The future and conditional of reflexive/clitic constructions take an unusual form called mesoclisis: the clitic goes between the infinitive stem and the ending — vender + se + ão = vender-se-ão. This is a quintessentially EP feature that still appears in formal writing. In spoken EP, people avoid it by rephrasing: vão-se vender novas propriedades, serão vendidas novas propriedades, or just an active with indefinite subject. See the clitic placement pages for details.

The agent cannot be expressed

This is a hard constraint, not a soft preference. The se-passive cannot take a por + agent phrase. If you want to name the agent, you must switch to the ser passive.

❌ Vendem-se livros pelo dono.

Ungrammatical — the se-passive cannot express an agent.

✅ Os livros são vendidos pelo dono. / O dono vende os livros.

The books are sold by the owner. / The owner sells the books.

This restriction is what makes the se-passive a preferred choice for agentless or generic statements — you're not hiding an agent; you're using a construction that structurally can't carry one. Classifieds ("rooms for rent") and shop signs ("books sold here") don't need to name the agent because it's obvious.

Characteristic environments: ads, signs, recipes, news

The se-passive is the standard form in several identifiable registers.

Advertising and classifieds

Alugam-se quartos na Baixa.

Rooms for rent in the Baixa district.

Vende-se apartamento com vista para o rio.

Apartment for sale with river view.

Compram-se livros antigos.

Old books bought / wanted.

Dão-se explicações de Matemática.

Maths tutoring offered.

Ensina-se piano a todos os níveis.

Piano lessons offered at all levels.

Walk past any loja tradicional in Lisbon and you'll see signs exactly like these. The construction has essentially colonized this genre.

Recipes and instructions

Junta-se o açúcar à manteiga e bate-se bem.

Add the sugar to the butter and beat well. (singular patients — singular verbs)

Misturam-se os ovos com a farinha e o leite.

Mix the eggs with the flour and the milk. (plural patient — plural verb)

Coze-se em lume brando durante meia hora.

Cook on low heat for half an hour.

Servem-se os pratos quentes.

Serve the dishes hot.

Cookery writing in Portuguese relies heavily on the se-passive as a way to give instructions impersonally. Compare English, which uses an imperative ("add the sugar, beat well"). Portuguese uses a mix — imperatives are possible, but junta-se / bate-se / mistura-se is just as standard in written recipes.

News headlines and reports

Descobriu-se uma nova jazida de gás no Alentejo.

A new gas deposit was discovered in the Alentejo.

Aprovaram-se as novas regras para o mercado de arrendamento.

The new rules for the rental market were approved.

Assinou-se ontem o acordo entre as duas empresas.

The agreement between the two companies was signed yesterday.

News writing uses both ser passive and se-passive; the choice often comes down to word economy and whether the agent matters. If the reporter names the agent explicitly later in the sentence, ser passive is more likely; if the event is being reported as a general fact, se-passive is compact and neutral.

The colloquial tension: vende-se casas

Here is the single most discussed point in Portuguese prescriptive grammar. The rule says:

With a plural patient, the verb must be plural: vendem-se casas, not vende-se casas.

In classical, formal, and educated written Portuguese, this is strictly observed. But in everyday spoken EP, you will hear — and see, on informal shop signs — singular verbs with plural patients: vende-se livros, aluga-se quartos, precisa-se funcionários.

(informal, non-standard) Vende-se livros na loja do canto.

Books for sale at the corner shop. (heard in speech; prescriptively wrong)

(standard, prescriptive) Vendem-se livros na loja do canto.

Books for sale at the corner shop. (the correct written form)

What is happening here is that speakers are reanalyzing the se-passive as an impersonal se. In an impersonal se construction, the verb is always singular and the noun phrase is treated as an object, not a subject. The grammarians have resisted this reanalysis for centuries; speakers have kept doing it anyway.

What to do as a learner

In writing (formal or neutral): follow the prescriptive rule. Write vendem-se casas, never vende-se casas.
In speech: you will hear both. Neither will mark you as a non-native speaker; the singular-verb version is extremely widespread.
On shop signs and classifieds: the prescriptive form dominates in print ads and professionally produced signs; handwritten signs often use the singular.
In exams and formal writing assessments: always agree.

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A useful test: if you could replace the sentence with X é vendida / são vendidos (a ser passive), the prescriptive form is the passiva pronominal with agreement. As casas são vendidas → Vendem-se casas. If it doesn't sound like a ser passive, it's probably impersonal se and stays singular.

Distinguishing passiva pronominal from impersonal se

Both constructions involve se; both look similar; but they behave differently. Here is a side-by-side.

Feature	Passiva pronominal	Impersonal se
Can the noun be a grammatical subject?	Yes — verb agrees with it	No — there is no grammatical patient
Verb number	Matches the patient (sg. or pl.)	Always 3rd person singular
Typical verbs	Transitive: vender, alugar, construir, plantar, escrever	Intransitive or pseudo-intransitive: falar, comer, viver, trabalhar, dizer
Feel	"X is done"	"One does X"
Example	Vendem-se livros. (books are sold)	Fala-se inglês. (English is spoken / one speaks English)

The boundary is sometimes genuinely blurry. For example, fala-se muitas línguas could in principle be analyzed as passiva pronominal (muitas línguas são faladas), in which case the verb should be falam-se. Prescriptive grammar insists on falam-se muitas línguas; conversational speech routinely uses fala-se muitas línguas. The blur is part of why the two constructions feel like a single system with two ends.

Natural alternatives in casual EP

For many of the sentences where a textbook would offer a passiva pronominal, casual EP reaches for an active with an indefinite subject — a plain third-person plural with no explicit pronoun.

Vendem livros nesta loja.

They sell books in this shop. (active with indefinite they — very common in speech)

Construíram um novo estádio em Braga.

They built a new stadium in Braga. (active, indefinite subject)

Dizem que ele vai ser ministro.

They say he's going to be minister. (active, indefinite subject — compare with Diz-se que...)

The active version is slightly more informal than the passiva pronominal. In news writing the se-passive dominates; in kitchen-table conversation the indefinite active often wins.

Comparison with English

English has no direct equivalent of the passiva pronominal. The closest constructions are:

Passive voice: "Books are sold here." (closest in meaning)
"They" as an impersonal: "They sell books here." (closest in spoken register)
"For sale / for rent" labels: "Books for sale." (closest in sign / classified use)

English speakers often trip on the -se suffix and think "wait, 'books sell themselves'?" — which is a completely wrong reading. The construction is not reflexive; the -se marks the passive, not a reflexive pronoun. A book does not sell itself; it is sold.

Vende-se uma casa.

A house is for sale. (NOT: a house sells itself)

Alugam-se quartos.

Rooms for rent. (NOT: rooms rent themselves)

Comparison with Spanish

Spanish and Portuguese share this construction almost identically. Se venden libros in Spanish is vendem-se livros in Portuguese. The prescriptive agreement rule is the same; the colloquial tension around se vende casas vs. se venden casas is the same in Latin America. A Spanish speaker reading Portuguese signs will feel completely at home.

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The only structural difference: Portuguese uses enclisis (vendem-se) in neutral affirmative contexts, Spanish uses proclisis (se venden). Same construction, different clitic position.

Common Mistakes

❌ Vende-se casas.

Prescriptively wrong — with a plural patient, the verb must be plural: vendem-se casas. Widespread in colloquial speech but avoid in writing.

✅ Vendem-se casas nesta zona.

Houses are for sale in this area.

❌ Vendem-se livros pelo dono.

The se-passive cannot take a por + agent phrase. Use the ser passive instead.

✅ Os livros são vendidos pelo dono. / O dono vende os livros.

The books are sold by the owner.

❌ Se vendem livros aqui.

Proclisis in a simple affirmative main clause is wrong in EP — the default is enclisis: vendem-se.

✅ Vendem-se livros aqui.

Books are sold here.

❌ Não vendem-se livros ao domingo.

Negation triggers proclisis — the clitic moves before the verb: não se vendem.

✅ Não se vendem livros ao domingo.

Books are not sold on Sundays.

❌ Alugam quartos.

Grammatical as an active with indefinite subject, but if the intended meaning is 'rooms for rent' as a classified ad, the standard form is alugam-se quartos.

✅ Alugam-se quartos no centro.

Rooms for rent in the centre.

❌ Vendem-se a casa da esquina.

Singular patient (a casa) demands a singular verb: vende-se.

✅ Vende-se a casa da esquina.

The house on the corner is for sale.

Key Takeaways

Structure: verb + -se
- patient. The -se marks the passive; the verb agrees with the patient.
Agreement rule: singular patient → singular verb; plural patient → plural verb. Vende-se casa / vendem-se casas. This is the central, non-negotiable rule in formal writing.
Colloquial tension: in everyday speech, singular verbs with plural patients (vende-se casas) are widespread but prescriptively non-standard. Use the agreeing form in writing.
Cannot express the agent: no por
- agent phrase. If you want to name the doer, switch to the ser passive.
Enclisis in default affirmative contexts (vendem-se livros); proclisis after negation and subordinators (não se vendem livros, disseram que se vendem livros).
Characteristic environments: classifieds, shop signs, advertising, recipes, news reports.
Distinguished from impersonal se: passiva pronominal agrees with a patient; impersonal se stays singular because there is no grammatical patient.
No English equivalent. Closest translations are "be + pp" (passive), "they + verb" (indefinite active), or "for sale / for rent" (sign-genre label).

For the broader system, see the passive/impersonal overview. For the explicit passive with named agents, see the ser passive page. For the underlying agreement principles, see past participle agreement.