Causative *Lasciare* in Italian

In Brief

Italian uses lasciare + infinitive to say that someone lets, allows, or does not prevent another person from doing something: Mi lasciano uscire means “They let me go out.” Unlike causative fare, which presents someone as causing an action, causative lasciare presents them as giving permission or not intervening.

Overview

The basic meaning of lasciare is “to leave,” but followed by an infinitive (the base verb form, such as entrare or parlare) it often works like English “let”: Lascia entrare Marco means “Let Marco come in.” The person who is allowed to act is understood as the subject of the infinitive: Marco is the one entering.

This construction is introduced around B2 because it combines several familiar systems: infinitives, object pronouns, commands, and compound tenses. The idea itself is straightforward, but the Italian sentence may package information differently from English. In particular, English uses an object form after “let” (let me, let him), while Italian commonly puts an unstressed object pronoun before the conjugated form of lasciare: mi lascia, lo lasciamo, non li hanno lasciati.

Lasciare can express active permission (“I gave her permission”), passive tolerance (“I did not stop her”), or making something available (“leave it to cool”). Context tells you which shade is intended. It also appears in highly frequent expressions such as lascia stare (“leave it alone,” “forget it”).

How It Works

The core pattern

The ordinary structure is:

subject + conjugated lasciare + person/thing affected + infinitive

• Marta lascia uscire i bambini. — Marta lets the children go out.
• Il custode ha lasciato entrare gli ospiti. — The caretaker let the guests in.
• Lascio raffreddare il caffè. — I let the coffee cool.

The person or thing after lasciare is the one that performs or undergoes the action expressed by the infinitive. With a noun, Italian often places it between lasciare and the infinitive, but it may follow the infinitive too, especially when it is new or emphasized: Lascia parlare tua sorella. Both word order and intonation help organize the message.

The infinitive does not change for person or tense. All tense, mood, and agreement information belongs to lasciare:

Time or attitude	Italian	English
Present	Lo lascio parlare.	I let him speak.
Imperfect	Lo lasciavo parlare.	I used to let him speak.
Completed past	L'ho lasciato parlare.	I let him speak.
Future	Lo lascerò parlare.	I will let him speak.
Conditional	Lo lascerei parlare.	I would let him speak.

Pronouns normally go with lasciare

An object pronoun (a short word replacing the person or thing affected) normally comes before a finite, or conjugated, form of lasciare:

Person allowed to act	Before lasciare	Example
me	mi	Non mi lasciano dormire.
you, singular	ti	Ti lascio decidere.
him / it	lo	Lo lascio entrare.
her / it	la	La lascio parlare.
us	ci	Ci hanno lasciato aspettare fuori.
you, plural	vi	Vi lasceremo scegliere.
them, masculine or mixed	li	Li lasciano giocare.
them, feminine	le	Le lasciano lavorare in pace.

English “let me speak” begins with “let,” but Italian mi attaches to the affirmative informal singular command: lasciami parlare. The same happens with other affirmative commands: lascialo entrare, lasciateli giocare. With a negative informal singular command, both placements are possible: non lasciarmi solo and non mi lasciare solo.

These direct-object forms are standard when the infinitive has no expressed direct object: lo lascio parlare, la lascio uscire. When the infinitive already has a direct object, Italian often marks the person acting with an indirect pronoun: Gli lascio guidare la macchina (“I let him drive the car”), Le ho lasciato scegliere il film (“I let her choose the film”). This avoids placing two direct objects in the same compact construction. In everyday usage there is some variation, especially when the infinitive's object is not stated, so learn clear model sentences rather than assuming that English “him” always maps to lo or always to gli.

Compound tenses and agreement

Compound tenses use avere: ho lasciato, avevano lasciato, avrei lasciato. When a third-person direct-object pronoun comes before the past participle (the form such as lasciato used in a compound tense), the participle agrees with it in gender and number:

• L'ho lasciato entrare. — I let him in.
• L'ho lasciata entrare. — I let her in.
• Li abbiamo lasciati giocare. — We let them play.
• Le hanno lasciate partire. — They let them leave.

With mi, ti, ci, and vi, agreement may be less visible or more variable in ordinary usage, but forms such as mi ha lasciata parlare clearly identify a female speaker. With an explicit noun after the verb, the participle normally remains unchanged: Ho lasciato entrare Anna.

Permission, non-intervention, and resulting states

The construction covers more than formal permission:

1. Giving permission: I genitori lo lasciano viaggiare da solo.
2. Not preventing an action: L'ho visto, ma l'ho lasciato andare.
3. Allowing a process to continue: Lascia asciugare la vernice.
4. Leaving something in a state: Ha lasciato la porta aperta.

The fourth pattern has an adjective or participle, not an infinitive. It means “leave something open/finished/etc.” and should be distinguished from the causative structure, even though the broader idea of non-intervention is related.

The crucial contrast with causative fare

Fare + infinitive says that the subject causes, arranges, or compels an action. Lasciare + infinitive says that the subject permits it or does not stop it.

With fare	With lasciare	Difference
Mi ha fatto aspettare.	Mi ha lasciato aspettare.	made me wait vs let/left me waiting
Fallo entrare.	Lascialo entrare.	cause/order him to enter vs allow him to enter
Ho fatto riparare la bici.	Ho lasciato riparare la bici.	had it repaired vs allowed it to be repaired; the second needs a suitable context

English “have” and “let” usually keep this distinction clear. The potential trap is treating fare and lasciare as interchangeable just because both precede an infinitive.

Examples in Context

Italian	English	Note
Lasciami parlare!	Let me speak!	Affirmative command; mi attaches to lascia.
Non mi lasciano uscire da sola.	They don't let me go out alone.	The speaker is female; da sola agrees with her.
L'ho lasciato entrare senza fare domande.	I let him in without asking questions.	Lasciato agrees with lo.
Lascia stare, non importa.	Leave it alone; it doesn't matter.	Very common fixed expression.
I miei mi lasciavano giocare fuori fino a tardi.	My parents used to let me play outside until late.	The imperfect describes a repeated past habit.
Ti lascio scegliere il ristorante.	I'll let you choose the restaurant.	Present tense with a future-like decision.
Il medico le ha lasciate tornare a casa.	The doctor let them go home.	Le refers to a group of women; note lasciate.
Lasciate riposare l'impasto per un'ora.	Let the dough rest for an hour.	Instruction addressed to more than one person or formally to one person.
Perché non lo lasci finire?	Why don't you let him finish?	Third-person direct pronoun lo.
Se dipendesse da me, vi lascerei partire prima.	If it were up to me, I would let you leave early.	Conditional lascerei.
Apri la finestra e lascia entrare un po' d'aria.	Open the window and let some air in.	A thing, un po' d'aria, is allowed to enter.
Non lasciarti scoraggiare da un errore.	Don't let one mistake discourage you.	Reflexive lasciarsi with a passive-like meaning.
Il rumore non ci ha lasciato dormire.	The noise didn't let us sleep.	An inanimate cause can prevent permission in a broader sense.
Lascialo fare: sa quello che fa.	Let him do it; he knows what he's doing.	Lasciar fare often means not to interfere.

Common Mistakes

Using a conjugated second verb

• Wrong: Mi lasciano esco presto.
• Right: Mi lasciano uscire presto.
• Why: After causative lasciare, use the infinitive: uscire, not esco.

Copying English pronoun placement

• Wrong: Lascio lui entrare as a neutral translation of “I let him enter.”
• Right: Lo lascio entrare.
• Why: An unstressed Italian object pronoun normally precedes the conjugated verb. Lascio entrare lui is possible when him is strongly contrasted with somebody else.

Choosing a pronoun without checking the infinitive

• Wrong: Lo lascio guidare la macchina in careful standard usage.
• Right: Gli lascio guidare la macchina.
• Why: With guidare la macchina, the infinitive already has the direct object la macchina, so the person allowed to drive is normally indirect. Compare lo lascio guidare when no other direct object is expressed.

Forgetting agreement after lo, la, li, or le

• Wrong: Le ho lasciato entrare. (meaning several women)
• Right: Le ho lasciate entrare.
• Why: A preceding third-person direct-object pronoun triggers agreement on lasciato: lasciata, lasciati, lasciate.

Choosing fare when you mean permission

• Wrong: Mia madre mi fa uscire stasera if the intended meaning is simply “My mother lets me go out tonight.”
• Right: Mia madre mi lascia uscire stasera.
• Why: Fare normally presents the action as caused: the first sentence can sound as though she makes you go out.

Separating an affirmative command from its pronoun

• Wrong: Lascia mi parlare.
• Right: Lasciami parlare.
• Why: With an affirmative informal singular command, the pronoun is written as one word with the verb.

Usage Notes

Lasciare may sound more neutral than formal English “allow.” In everyday conversation, mi lasci...? can be a polite but direct request: Mi lasci passare? means “Will you let me through?” With formal Lei, the command is mi lasci: Mi lasci spiegare, per favore (“Please let me explain”). Although it looks identical to the present subjunctive, here it functions as the formal imperative.

Negation often expresses restriction rather than permission: non mi lascia respirare may literally mean that someone or something does not let the speaker breathe, or figuratively that it gives them no space. Context can make the construction emotionally strong: Lasciami in pace (“Leave me alone”) contains no infinitive but belongs to the same family of requests for non-interference.

Two fixed combinations are especially useful:

• lasciare stare — leave alone, drop the subject, forget it: Lascia stare quella scatola; Lascia stare, ci penso io.
• lasciar fare — let someone carry on, avoid interfering: Lascialo fare; Bisogna lasciar fare agli esperti. The last example uses agli esperti because “the experts” are framed as the people to whom freedom of action is given, a lexicalized use that is best learned as a whole.

The final vowel of lasciare is often dropped before another infinitive in established combinations and polished writing: lasciar perdere, lasciar fare. The full form is also possible in many contexts. This is a spelling and style choice, not a change in meaning.

Beyond the Basics / Advanced Use

Lasciarsi + infinitive

The reflexive form lasciarsi + infinitive means “to let oneself” do something, but it often has a natural passive-like English translation:

• Si è lasciato convincere. — He allowed himself to be persuaded / He was persuaded.
• Non lasciarti ingannare dalle apparenze. — Don't let appearances deceive you.
• Ci siamo lasciati trasportare dall'entusiasmo. — We let ourselves get carried away by enthusiasm.

The reflexive pronoun refers back to the subject, and compound tenses take essere: mi sono lasciata convincere for a female speaker, si sono lasciati convincere for a masculine or mixed group. The participle agrees with the subject.

Lasciare che + subjunctive

Italian can replace the compact infinitive structure with lasciare che + subjunctive (the verb form often used for dependent actions viewed through wishes, permission, doubt, or judgment):

• Lascia che ti aiuti. — Let me help you.
• Lasciamo che siano loro a decidere. — Let them be the ones to decide.
• Ha lasciato che i bambini giocassero fuori. — She let the children play outside.

This version gives the subordinate action its own explicit subject and tense. It is useful when the infinitive pattern would be crowded or ambiguous. After a present command or present-tense verb, the present subjunctive is common (che ti aiuti); after a past main verb, the imperfect subjunctive often marks a simultaneous or later past action (che giocassero).

Ambiguity and emphasis

A sentence with several nouns can become hard to parse: Ho lasciato leggere il messaggio a Paolo might be understood in more than one way without context. Native speakers often solve this by choosing a pronoun, changing the order, or using lasciare che: Ho lasciato che Paolo leggesse il messaggio. Clear wording is better than forcing every idea into the infinitive construction.

With explicit emphasis, a stressed pronoun can follow: Lascialo decidere a lui. Here lo supplies the grammatical object, while a lui reinforces “him, not someone else.” English often uses vocal stress alone; Italian commonly adds this reinforcing phrase.

Practice Tips

1. Build contrast pairs. Take one situation and alternate fare and lasciare: Mi ha fatto restare (“made me stay”) versus mi ha lasciato restare (“let me stay”). This trains meaning, not just word order.
2. Drill pronouns through commands and past forms. Say pairs such as lascialo entrare / l'ho lasciato entrare and lasciale parlare / le ho lasciate parlare. This connects pronoun placement with participle agreement.
3. Notice non-intervention in real Italian. When listening or reading, collect examples of lascia stare, lasciar fare, and lasciarsi + infinitive. Write down who controls the situation and who performs the infinitive action.

Related Concepts

• Prerequisite: Causative Fare — compare causing an action with permitting or not preventing it.