Passive Si in Italian

Overview

The si passivante (passive si) is a construction that creates a passive meaning using si + a verb that agrees with the noun subject. It is the most common way to express passive actions in Italian, far more frequent than the formal passive with "essere + past participle." You see it on signs ("Si vendono appartamenti" — Apartments for sale), in recipes ("Si aggiungono le uova" — The eggs are added), and in everyday speech.

The passive si differs from the impersonal si in one crucial way: the verb agrees in number with the noun. "Si vende una casa" (A house is sold — singular verb, singular noun) vs. "Si vendono case" (Houses are sold — plural verb, plural noun). In the impersonal si, the verb is always singular. This distinction is the key to mastering both constructions.

The passive si allows speakers to describe what happens to something without specifying who does it. It is especially common in instructions, advertisements, rules, and general descriptions — any context where the agent is irrelevant or unknown.

How It Works

Basic formation

Si + verb (agreeing with the noun subject):

Noun (subject)	Verb agrees	Full sentence	Translation
Singular noun	3rd person singular	Si vende una casa.	A house is sold / for sale.
Plural noun	3rd person plural	Si vendono case.	Houses are sold / for sale.
Singular noun	3rd person singular	Si parla italiano.	Italian is spoken.
Plural noun	3rd person plural	Si parlano molte lingue.	Many languages are spoken.

The noun usually comes after the verb in this construction.

Passive si vs impersonal si

Construction	Verb	Example	Translation
Passive si	Agrees with noun	Si vendono appartamenti.	Apartments are sold.
Impersonal si	Always singular	Si vende a buon prezzo.	One sells at a good price.
Passive si	Agrees with noun	Si mangiano spaghetti.	Spaghetti are eaten.
Impersonal si	Always singular	Si mangia bene qui.	One eats well here.

Rule of thumb: If there is a noun (without a preposition) that the action happens to, use passive si with agreement. If you are making a general statement with no specific object, use impersonal si with a singular verb.

Compound tenses

In compound tenses, the passive si uses essere and the past participle agrees with the subject:

Present	Compound tense	Translation
Si vende una casa.	Si è venduta una casa.	A house was sold.
Si vendono case.	Si sono vendute case.	Houses were sold.
Si prepara la cena.	Si è preparata la cena.	Dinner was prepared.
Si cucinano i dolci.	Si sono cucinati i dolci.	The desserts were cooked.

Common contexts

Context	Example	Translation
Signs/advertisements	Si affittano camere.	Rooms for rent.
Rules/instructions	Non si accettano carte di credito.	Credit cards not accepted.
Recipes	Si aggiungono due uova.	Two eggs are added.
General descriptions	In Italia si bevono molti caffè.	In Italy, many coffees are drunk.
Announcements	Si cercano volontari.	Volunteers wanted.

Examples in Context

Italian	English	Note
Si vendono appartamenti.	Apartments for sale.	Sign — plural agreement
Si parla inglese.	English is spoken.	Singular noun
Si accettano prenotazioni.	Reservations are accepted.	Plural noun
In questa scuola si studiano tre lingue.	In this school, three languages are studied.	Plural agreement
Non si accettano resi dopo 30 giorni.	Returns are not accepted after 30 days.	Negative + plural
Si è trovata una soluzione.	A solution was found.	Compound tense, feminine singular
Si sono venduti tutti i biglietti.	All the tickets were sold.	Compound tense, masculine plural
Come si scrive questa parola?	How is this word written?	Singular agreement
Si mangiano le lenticchie a Capodanno.	Lentils are eaten at New Year.	Cultural tradition
Si vedono le montagne da qui.	The mountains can be seen from here.	Plural agreement
Non si fanno sconti.	No discounts are given.	Negative + plural
Si è costruito un nuovo ponte.	A new bridge was built.	Compound tense, masculine singular

Common Mistakes

Forgetting verb agreement with plural nouns

• Wrong: Si vende appartamenti.
• Right: Si vendono appartamenti.
• Why: In the passive si, the verb must agree with the noun subject. "Appartamenti" is plural, so the verb must be third person plural: "vendono."

Confusing passive si with impersonal si

• Wrong: Si mangia spaghetti. (meaning "spaghetti are eaten")
• Right: Si mangiano spaghetti.
• Why: When a noun follows as the subject of the passive action, the verb agrees with it. "Si mangia" (singular) would be impersonal, meaning "one eats" in general.

Wrong participle agreement in compound tenses

• Wrong: Si sono venduto tutti i biglietti.
• Right: Si sono venduti tutti i biglietti.
• Why: In compound tenses with passive si, the past participle agrees with the subject in gender and number: biglietti (masculine plural) → venduti.

Using avere instead of essere in compound tenses

• Wrong: Si ha venduto la casa.
• Right: Si è venduta la casa.
• Why: Compound tenses with passive si always use essere. The past participle agrees with the subject: casa (feminine singular) → venduta.

Usage Notes

The passive si is the most common and natural way to express passive actions in everyday Italian. The formal passive (essere + past participle: "La casa è venduta") exists but sounds more literary or bureaucratic. In conversation, on signs, and in recipes, the passive si dominates.

In advertisements and signs, you will see the passive si constantly: "Si affittano camere" (Rooms for rent), "Si cercano commesse" (Shop assistants wanted), "Si riparano scarpe" (Shoes repaired). These are so common that they function as a specific register — the language of classified ads and shop windows.

The passive si and impersonal si overlap when the object is singular: "Si vende una casa" can be interpreted as either passive (A house is sold) or impersonal (One sells a house). With plural nouns, the distinction is clear because the passive si uses a plural verb.

In some regions, particularly in spoken southern Italian, speakers may not always make the verb agree with a plural noun: "Si vende anche case" instead of "Si vendono anche case." This is dialectal and not standard. In writing and formal speech, agreement is required.

Practice Tips

1. Read Italian classified ads: Look at real estate, job, and service listings in Italian. They are filled with passive si constructions: "Si vende," "Si affitta," "Si cerca." Note the singular/plural agreement patterns.
2. Convert active to passive si: Take active sentences and transform them: "La gente mangia la pizza" → "Si mangia la pizza." "Le persone studiano le lingue" → "Si studiano le lingue." This drills the agreement rule.
3. Write recipe instructions: Describe how to make a dish using passive si: "Si tagliano le cipolle. Si aggiunge l'olio. Si cuociono per dieci minuti." Recipes are the perfect natural context for this construction.

Related Concepts

• Impersonal Si — the related construction without noun agreement
• Reflexive Verbs — the broader si pronoun system
• Present Perfect — auxiliary and agreement rules in compound passive si