Impersonal 'si'
A2Impersonal si (si impersonale) in Italian
The impersonal si is a very common Italian construction used to talk about people in general without naming who they are — English equivalents are one, you, people, they, or the passive voice (is/are + past participle). It lets you say things like "people eat well here" or "it is said that..." without a specific subject.
What does “impersonal si” mean?
Impersonal si is the clitic si placed before a verb to form a sentence with an indefinite or general subject. Instead of saying "People do X" or using the passive voice, Italian often uses si:
- Si mangia bene in Italia. (People eat well in Italy. / One eats well in Italy.)
- Si dice che arriverà tardi. (It is said / People say that he will arrive late.)
Think of it as a way to remove or hide the agent: who performs the action is unknown, unimportant, or generic.
When do I use impersonal si?
Use impersonal si when:
- You make general statements (customs, habits, general truths):
- Si lavora molto in quella azienda. (People work a lot at that company.)
- In estate si va al mare. (In summer people go to the sea.)
- You give instructions or notices (signs, rules):
- Si prega di non fumare. (Please do not smoke.)
- Si accettano solo contanti. (Only cash is accepted.)
- You express hearsay or general opinion:
- Si dice che sia bravo. (They say / It is said that he is good.)
- You want a passive-like meaning without a true passive construction:
- Si vendono case. (Houses are sold / Houses for sale.)
How do I form the impersonal si?
Basic rule (present tense)
- Put si before the verb. When there is no explicit direct object that the verb must agree with, use the third person singular:
- Si parla inglese qui. (People speak English here.)
- Non si fuma. (No smoking.)
With transitive verbs: si passivante (agreement)
When a transitive verb is used and the thing affected (the logical subject of the passive) is explicitly mentioned after the verb, the verb often agrees in number with that noun. This use is often called the "si passivante" and gives a passive meaning.
- Singular object: Si vende una casa. (A house is/for sale.)
- Plural object: Si vendono case. (Houses are sold / Houses for sale.)
More examples:
- Si mangia la pizza. (People eat pizza / Pizza is eaten.)
- Si mangiano le pizze. (The pizzas are eaten.)
- Si costruisce una scuola. (A school is being built.)
- Si costruiscono molte scuole. (Many schools are being built.)
Compound tenses (passato prossimo, trapassato, etc.)
In compound tenses the impersonal/passive si construction typically uses the auxiliary essere, and the past participle agrees in gender and number with the noun that functions as the (logical) subject if that noun is present.
- No explicit subject (general action):
- Ieri si è mangiato bene. (Yesterday people ate well.)
- Si è parlato molto di questo tema. (There was a lot of talk about this topic.)
- With an explicit plural subject/object that becomes the logical subject (agreement):
- Ieri si sono mangiati molti dolci. (Many sweets were eaten yesterday.)
- Si sono chiuse le scuole. (The schools were closed.)
Note: In spoken or informal Italian you may hear singular forms even with an expressed plural object, but in careful writing adapt agreement so that the verb and participle match the expressed noun.
Imperfetto, futuro, conditional, subjunctive
Si works with other tenses and moods too:
- Si diceva che sarebbe venuto. (People used to say that he would come.)
- Se si volesse, si potrebbe partire domani. (If one wanted, one could leave tomorrow.)
- Speriamo che si trovi una soluzione. (We hope a solution is found.)
Negatives and questions
- Negation: place non before si: Non si fuma. (One should not smoke / No smoking.)
- Questions: Si può entrare? (May one enter? / Can you enter?)
si with pronouns and 'ci si'
- ci si: when a verb normally uses ci (there/at that place/with us) you can combine it with si: "In quel paese ci si sveglia presto." (In that village people wake up early.)
- Direct/indirect object pronouns: avoid attaching a third-person clitic directly after si; instead put the full noun or rephrase. Typical patterns:
- Si parla a Marco. (They speak to Marco.) — not *Si gli parla.*
- Si dice la verità a lui. (One tells him the truth.)
(Pronoun placement with si can be complex; a safe strategy for learners is to rephrase or use a passive with "essere" if many clitics are required.)
Signs, notices and formal language
Si is extremely common on signs and notices to express rules or services:
- Si prega di non lasciare i rifiuti. (Please do not leave rubbish.)
- Si cerca cameriera. (Waiter/waitress wanted.)
- Si garantisce la qualità. (Quality guaranteed.)
These are impersonal formulas; in English they often translate as passive imperatives or as "please" statements.
How to tell impersonal si from other si constructions
There are several si constructions in Italian; the most common confusions are:
- si impersonale (generic people; verb usually 3rd sg)
- Si mangia bene qui. (People eat well here.)
- si passivante (passive meaning; verb agrees with expressed noun)
- Si mangiano molti dolci. (Many sweets are eaten.)
- reflexive si (when someone performs the action on themselves)
- Si lava ogni mattina. (He/she washes himself/herself every morning.)
Tip: If the sentence has an explicit noun after the verb and the verb agrees with that noun, you are in a passivante/passive use. If the verb remains 3rd singular and there is no clear direct object, it is the impersonal si.
Compare impersonal si with the passive using essere
Both can give a passive meaning, but they differ in formality and focus.
- Si vendono case. (Houses are sold.) — common, neutral; emphasizes the action generally.
- Le case vengono vendute. / Le case sono vendute. (The houses are sold / The houses are being sold.) — more explicitly passive; often more formal or used when you want the noun as subject at the front.
Choose si for general statements and notices; choose essere + past participle when you need a full passive clause with a clear subject.
Common mistakes to avoid
- Don’t mix si with explicit personal subjects: wrong: *Si io vado* — use Io vado.
- Watch agreement: with a plural noun after the verb, make the verb/plural participle match: Si vendono case (not Si vende case in careful writing).
- Don’t confuse si (impersonal/reflexive clitic) with sì (yes) — they are different (sì has an accent).
- When many clitic pronouns are needed, prefer a passive with essere or an active construction with a named subject rather than forcing complicated pronoun orders.
Quick reference: the essentials
- Form: si + verb
- Default: 3rd person singular for general statements (Si vive bene qui.)
- If an explicit plural thing follows (si passivante), make the verb agree in number (Si vendono libri.)
- Compound tenses: usually si + essere + past participle; participle agrees with the explicit noun subject if present (Si sono chiuse le porte.)
- Negation: non prima di si (Non si fuma.)
- Use on signs and formal notices: Si prega di… / Si richiede…
Glossary (simple)
- si impersonale: the use of si to mean a general "one/people/they".
- si passivante: si used with a transitive verb that agrees with a following noun to express a passive meaning.
- clitic: a short unstressed pronoun like si, mi, ti, gli that clings to the verb.
- direct object: the thing that receives the action (e.g., "la pizza" in "Mangiano la pizza").
Examples (many real sentences with translations)
Present / general statements:
- Si parla inglese. (English is spoken / People speak English.)
- In Italia si mangia la pasta. (In Italy people eat pasta.)
- Non si fuma nei locali pubblici. (You must not smoke in public places / No smoking in public places.)
- Si lavora dalle nove alle cinque. (People work from nine to five.)
si passivante (agreement):
- Si vende un appartamento. (An apartment is for sale.)
- Si vendono diversi appartamenti. (Several apartments are for sale.)
- Si costruisce una scuola. (A school is being built.)
- Si costruiscono tre scuole. (Three schools are being built.)
Compound tenses (passato prossimo) and agreement:
- Ieri si è mangiato molto alla festa. (Yesterday people ate a lot at the party.)
- Ieri si sono mangiati molti dolci. (Yesterday many sweets were eaten.)
- Si è deciso di partire domani. (It was decided to leave tomorrow.)
- Si sono prese delle misure importanti. (Important measures were taken.)
Imperfect / conditional / subjunctive:
- Si diceva che fosse difficile. (People used to say it was difficult.)
- Se si volesse, si potrebbe finire domani. (If one wanted, one could finish tomorrow.)
- Speriamo che si riesca a risolvere il problema. (We hope the problem can be solved.)
Instructions / signs / formal uses:
- Si prega di chiudere la porta. (Please close the door.)
- Si accettano solo carte di credito. (Only credit cards are accepted.)
- Si cerca cameriere/cameriera. (Waiter/waitress wanted.)
Hearsay / reported speech:
- Si dice che il film sia bello. (They say the film is good.)
- Si racconta che la città sia antica. (It is said that the town is ancient.)
With ci si and location:
- In quel quartiere ci si sente al sicuro. (In that neighbourhood one feels safe.)
- In montagna ci si diverte. (In the mountains people have fun.)
Negative and question forms:
- Non si può fumare qui. (You cannot smoke here.)
- Si può entrare? (May one enter? / Is it allowed to enter?)
Comparisons with essere-passive:
- Si vendono libri. (Books are sold.) — common and neutral.
- I libri vengono venduti. / I libri sono venduti. (Books are sold / are being sold.) — more explicitly passive.
Summary
The impersonal si is an efficient and very common way to express general actions or passive-like statements without naming the agent. Remember: si + verb, usually third person singular; if a plural noun is explicitly affected by the action, make the verb agree (si passivante). Use si for general observations, notices, and hearsay; use a real passive with essere if you need a formal passive clause with a clear subject.
Practice recognizing whether a sentence has an explicit noun that should govern agreement, and choose singular or plural accordingly. With time, impersonal si will become a natural tool to make your Italian sound fluent and natural.