Personal Infinitives: Meanings and Usage | Hungarian Grammar

A personal infinitive lets Hungarian identify the performer of an otherwise nonfinite action. In Mennem kell “I have to go,” kell expresses impersonal necessity while mennem marks the person who goes. An overt logical subject is dative—Péternek mennie kell—and can be omitted when the ending and context already identify it.

Review the full paradigm on the personal-infinitive forms page. This page explains why speakers choose it in obligations, permission, evaluations, and compressed participant structures. Unless labeled otherwise, examples are neutral modern standard Hungarian.

Assigning an obligation to a person

Kell plus a bare infinitive can state a general rule, but a personal infinitive assigns the obligation to a particular participant.

Indulnom kell, különben lekésem az utolsó buszt.

I have to leave, otherwise I'll miss the last bus.

Holnap korábban fel kell kelned.

You have to get up earlier tomorrow.

A szerelőnek ki kell cserélnie ezt az alkatrészt.

The technician has to replace this component.

The endings -nom, -ned, -nie preserve the participant relation even though the lexical verbs do not carry finite tense. Time belongs to the whole construction. Kellett locates necessity in the past, kellene makes it conditional or advisory, and an adverb such as holnap supplies future reference.

Tegnap két órát kellett várnunk a rendelőben.

Yesterday we had to wait for two hours at the clinic.

Többet kellene pihennetek a vizsga előtt.

You should rest more before the exam.

The person endings remain -nunk and -netek while the modal environment changes. English places person on a separate subject and tense on have/had; Hungarian can omit the nominative subject and retain the participant inside possessive-like infinitive morphology.

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Read the construction from the infinitive outward: várnunk identifies “we” as the waiters; kellett says that waiting was necessary in the past. Neither word alone translates the entire English clause.

Generic rule versus participant-specific rule

Public instructions often leave the actor generic:

A belépés előtt kezet kell mosni.

Hands must be washed before entering.

A personal version addresses or describes one participant:

A belépés előtt kezet kell mosnod.

You have to wash your hands before entering.

The bare mosni is not missing an ending; it deliberately generalizes. Mosnod singles out one familiar addressee. With a plural noun, both dative marking and plural infinitive agreement appear:

A látogatóknak a recepción kell jelentkezniük.

Visitors must report to reception.

This structure is common in official prose (formal). The dative phrase is not an indirect object of kell in the English sense; it is the logical subject associated with jelentkezniük.

Permission and possibility

Personal infinitives occur with szabad and lehet when permission or possibility is assigned to someone.

Szabad itt leülnöm?

May I sit down here?

Nektek is lehet kérdeznetek az előadás végén.

You can ask questions at the end of the lecture too.

A betegeknek nem szabad étkezniük a vizsgálat előtt.

Patients must not eat before the examination.

Szabad leülnöm? is a conventional polite request, suitable in neutral or respectful interaction. Lehet kérdeznetek presents asking as available or permitted. Negative nem szabad expresses prohibition; it must not be confused with nem kell, which removes necessity.

Compare:

Nem kell megvárnod engem.

You don't have to wait for me.

Nem szabad megvárnod engem.

You must not wait for me.

The personal infinitive is identical, but the predicate changes the modal force.

Evaluations directed at someone

Adjectival and nominal predicates can evaluate a specific participant's action. Frequent frames include fontos “important,” érdemes “worthwhile,” felesleges “unnecessary,” nehéz “difficult,” and ideje “it is time.”

Fontos pontosan érkezned az interjúra.

It's important for you to arrive at the interview on time.

Érdemes előre lefoglalnunk a szállást.

It's worth our booking the accommodation in advance.

Ideje befejeznetek a beszélgetést.

It's time for you to finish the conversation.

Könnyű neked beszélned, hiszen nem te vállalod a kockázatot.

It's easy for you to talk, since you aren't taking the risk.

The last sentence explicitly contrasts the dative experiencer neked. The personal ending -ned makes the same relation visible on beszélned. This doubling resembles Hungarian possessive structures and is not redundant.

Not every adjective requires a personal infinitive. Jó sétálni “It's good to walk” is generic. Jó lenne többet sétálnod “It would be good for you to walk more” directs the evaluation to a particular person.

Dative phrases, omission, and focus

Because the ending already identifies person and number, a dative pronoun is often omitted:

Most haza kell mennem.

I have to go home now.

Adding nekem can establish a topic or contrast participants:

Nekem most haza kell mennem, de ti maradhattok.

I have to go home now, but you can stay.

If nekem itself is narrow focus, it occupies the preverbal position and changes prefix placement:

Nekem kell hazamennem, nem neked.

I'm the one who has to go home, not you.

Neutral haza kell mennem separates the directional prefix-like element from the infinitive through climbing. Focused nekem kell hazamennem leaves haza- attached to the personal infinitive. Prosody and word order jointly identify the contrast.

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The overt dative is not automatically emphatic. Péternek el kell mennie can simply name the obligated person. Pronouns such as nekem become contrastive when context and preverbal stress make them focus.

Objects remain inside the infinitive's event

A personal infinitive can take direct objects and case complements like a verb. Its person ending does not alternate for object definiteness.

El kell olvasnom egy cikket az órára.

I have to read an article for class.

El kell olvasnom a tanár által kijelölt cikket is.

I also have to read the article assigned by the teacher.

Both clauses use olvasnom. Unlike a finite verb, the personal infinitive has no indefinite/definite object paradigm. Nevertheless, object reference can affect a finite verb elsewhere in a larger construction, and the prefix el- still follows the word-order rules.

Case government also remains verbal:

Válaszolnom kell az ügyfél kérdésére.

I have to answer the client's question.

Válaszol governs sublative -ra/-re, so az ügyfél kérdésére does not become accusative merely because the verb is nonfinite.

Existential and relative-like patterns

Personal infinitives occur in compact expressions with interrogative words, especially when options are absent or available.

Nincs mit tennem; meg kell várnom a döntést.

There's nothing I can do; I have to wait for the decision.

Nem volt hova mennünk az eső elől.

We had nowhere to go to escape the rain.

Van miről beszélnünk a találkozón.

We have something to talk about at the meeting.

Mit, hova, miről retain the roles required by tenni, menni, beszélni, while -nem/-nünk identifies the actor. English often uses a finite relative expression (“that we can talk about”); Hungarian compresses the relation into a nonfinite form.

A short departure dialogue

This exchange is (informal):

Máris menned kell?

Do you have to leave already?

Igen, még el kell érnem a fél kilences vonatot.

Yes, I still have to catch the eight-thirty train.

Nem tudnál még tíz percet maradni?

Couldn't you stay another ten minutes?

Sajnos nem. Nektek viszont nem kell sietnetek.

Unfortunately not. You don't have to hurry, though.

Bare maradni is controlled by finite tudnál; personal menned, érnem, sietnetek occur with impersonal kell. One conversation naturally alternates the two infinitive systems.

Formal and informal comparison

A personal message may omit the dative subject (informal):

Holnap be kell mennem az irodába.

I have to go into the office tomorrow.

An official instruction normally names the regulated group (formal):

A pályázóknak az igazolásokat elektronikus úton kell benyújtaniuk.

Applicants must submit the certificates electronically.

The formal sentence's dative a pályázóknak and plural benyújtaniuk make responsibility explicit. This is not a formal-only paradigm; the same endings are fully ordinary in conversation.

Common Mistakes

❌ Én kell elmenni.

Incorrect transfer from an English nominative subject plus invariant infinitive.

✅ Nekem el kell mennem.

I have to leave.

❌ Péternek alá kell írniuk a papírt.

Incorrect agreement — the singular logical subject Péter requires a third-person singular ending.

✅ Péternek alá kell írnia a papírt.

Péter has to sign the paper.

❌ Nem kell elmész ilyen korán.

Incorrect — kell requires an infinitive, here with second-person marking.

✅ Nem kell elmenned ilyen korán.

You don't have to leave this early.

❌ Nekünk el kell mennünk a levelet.

Incorrect lexical choice — menni cannot take the letter as a direct object.

✅ Nekünk el kell vinnünk a levelet.

We have to take the letter away.

Key Takeaways

Personal infinitives identify the action's performer in modal, evaluative, and compressed nonfinite structures.
An overt logical subject is dative; the personal infinitive carries matching possessive-like person-number morphology.
Bare infinitives state generic rules, while personal forms assign necessity, permission, or evaluation to someone.
Nem kell removes necessity; nem szabad imposes prohibition.
Dative focus can change prefix placement without changing the personal ending.
Personal infinitives remain verbal: they take objects, governed cases, prefixes, and adverbs, but they do not mark tense or object definiteness.

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