ti vs Vi: Formal and Informal You | Croatian Grammar

English collapsed its two „you" words centuries ago: thou (singular, intimate) died out, and you now covers everyone — your child, your boss, the King. Croatian, like most European languages, kept the split. ti is the informal singular „you"; Vi is the formal/respectful singular „you" — and also the ordinary plural „you" for more than one person. Choosing between them is not optional politeness garnish: every verb, every pronoun, every possessive in the sentence has to agree with the choice, and getting it wrong is the single most common way a foreigner accidentally sounds either cold or disrespectful. The trap that catches every learner is the agreement rule, so we will hammer that first.

The core distinction

Form	Who it addresses	Register
ti	ONE person you are close to or above: family, friends, peers, children, animals, God in prayer	(informal)
Vi	ONE person you owe respect or distance: strangers, elders, superiors, officials, anyone in a service setting	(formal)
vi (plural)	MORE THAN ONE person, regardless of closeness	neutral — just „you all"

So Vi wears two hats: the respectful singular (one person, formal) and the plain plural (several people, any register). Grammatically these two are identical — the same pronoun, the same verb forms. Context tells them apart.

Kako se zoveš?

What's your name? — informal 'ti' (verb 'zoveš'), said to a child or a peer.

Kako se zovete?

What's your name? — formal Vi to one stranger, OR 'you all' to a group; the form is the same.

Bok, ti si Ana, zar ne?

Hi, you're Ana, right? — friendly 'ti' to someone your own age.

Oprostite, jeste li Vi gospodin Horvat?

Excuse me, are you Mr Horvat? — respectful Vi to one stranger.

The rule learners always break: Vi takes PLURAL agreement

This is the heart of the page. When Vi addresses one person formally, the verb still goes in the plural — exactly as if you were speaking to a crowd. There is no special „formal singular" verb form; Croatian borrows the plural to do the polite work.

So „Are you tired?" to a single respected stranger is Jeste li umorni? with the plural auxiliary jeste and (in careful speech) the plural adjective umorni — never the singular jesi / umoran. The same goes for the past tense: the past participle goes plural.

To one person (informal ti)	To one person (formal Vi)	Meaning
Ti si ovdje.	Vi ste ovdje.	You are here.
Jesi li došao?	Jeste li došli?	Did you come / arrive?
Što radiš?	Što radite?	What are you doing?
Možeš li mi pomoći?	Možete li mi pomoći?	Can you help me?
Gdje si bila?	Gdje ste bili?	Where were you?

Vi ste vrlo ljubazni.

You are very kind. — Vi to one person; the auxiliary 'ste' is plural even though you address one individual.

Jeste li danas došli na vrijeme?

Did you arrive on time today? — the past participle 'došli' is PLURAL with formal Vi, even for one person.

Što ste rekli, gospođo?

What did you say, ma'am? — 'ste rekli' (plural) addressed to a single woman; never 'si rekla' here.

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Burn this in: formal Vi = plural verb, always. The very first thing a learner forgets is that Vi for one person is grammatically plural. If you catch yourself saying Vi si… or Vi ste umoran, you have mixed the two systems. The auxiliary and the participle go plural: Vi ste umorni, Jeste li došli. (The mechanics of ste / jeste li live on the page on biti and htjeti clitics.)

The one subtlety: predicate adjectives may stay singular

Here is the wrinkle that even some native speakers handle inconsistently. The verb and participle with Vi are firmly plural. But a predicate adjective — an adjective that describes the actual person, sitting after the verb — has two competing pulls: grammatical number (plural, agreeing with Vi) and real-world reference (singular, because there is genuinely one person, and that person has a gender).

In careful, traditional style, the predicate adjective agrees with the real person: to one man you can say Vi ste umoran (singular masculine), to one woman Vi ste umorna (singular feminine) — keeping the agreement honest about who is actually there. In everyday modern speech, most people simply make everything plural: Vi ste umorni. Both are heard; the all-plural version is now far more common and is never wrong, so it is the safe default for a learner.

Vi ste umorni, gospodine.

You are tired, sir. — the common, fully-plural agreement; safe in any situation.

Vi ste vrlo ljubazni bili.

You were very kind. — plural participle 'bili' and plural adjective 'ljubazni' to one person; the everyday norm.

Jeste li sigurni da ste dobro?

Are you sure you're all right? — fully plural ('sigurni', 'ste'); the default for one formal addressee.

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If you want to sound polished, you may keep the predicate adjective singular to match the real person: Vi ste umoran (to a man), Vi ste umorna (to a woman). But the verb and the past participle NEVER do this — only a standalone predicate adjective has the option. When in doubt, make everything plural. It is the modern norm and offends no one.

Capitalised Vi as a mark of respect

In writing, the formal Vi and all its case forms are capitalised as a sign of respect: Vi, Vas, Vam, Vama, Vaš. This applies in letters, emails, formal messages — anywhere you address one respected reader. The plural „you all" stays lowercase (vi, vas, vam, vaš), which is in fact the cleanest way the written language distinguishes the respectful singular from the plain plural.

Case	Respectful singular (written)	Possessive
nominative	Vi	Vaš / Vaša / Vaše
accusative / genitive	Vas	Vašeg…
dative / locative	Vam / Vama	Vašem…

Hvala Vam na brzom odgovoru.

Thank you for your quick reply. — capitalised 'Vam' shows respect in a written message to one person.

Šaljem Vam u prilogu Vaš ugovor.

I'm sending you your contract in the attachment. — capitalised 'Vam' and 'Vaš' to one respected reader.

Veselimo se vašem dolasku.

We look forward to your (all) arrival. — lowercase 'vašem' because it's addressed to a group, not a respected individual.

Switching from Vi to ti

Croatian relationships have a clear ritual moment when two people agree to drop the formal Vi and move to ti. The proposal is Možemo na ti? („Can we be on ti-terms?") or, more warmly, Hajdemo na ti („Let's switch to ti"). By convention the older person, the woman, or the higher-ranking person offers it; accepting is a small act of intimacy. Until that moment, stay on Vi with anyone you would not address by first name in English.

Možemo na ti, zar ne? Svi smo ovdje kolege.

We can be on ti-terms, right? We're all colleagues here. — proposing the switch from Vi to ti.

Hajdemo na ti, predugo se znamo za Vi.

Let's switch to ti, we've known each other too long for Vi. — a warm proposal to drop the formal address.

Slobodno mi reci ti, nema potrebe za persiranjem.

Feel free to use ti with me, there's no need for formal address. — 'persiranje' is the noun for using Vi.

Common Mistakes

❌ Vi si umoran?

Wrong — formal Vi takes the PLURAL auxiliary; 'si' is singular. It must be 'Vi ste'.

✅ Jeste li umorni?

Are you tired? — plural auxiliary 'jeste' with formal Vi.

❌ Vi ste došao kasno.

Wrong — with Vi the past participle goes plural: 'došli', not the singular 'došao'.

✅ Vi ste došli kasno.

You came late. — plural participle 'došli' with formal Vi, even to one person.

❌ Kako se zoveš? (strancu na ulici)

Too familiar — to a stranger on the street use the formal 'Kako se zovete?'; 'zoveš' (ti) sounds presumptuous.

✅ Kako se zovete?

What's your name? — formal Vi to a stranger.

❌ Hvala vam, gospodine. (u pismu)

In writing to one respected person, the respectful 'Vam' should be capitalised: 'Hvala Vam'.

✅ Hvala Vam, gospodine.

Thank you, sir. — capitalised 'Vam' as a written mark of respect.

❌ Možeš li mi pomoći? (konobaru kojeg ne poznaješ)

Too informal — to a waiter you don't know, use 'Možete li…?'; 'možeš' (ti) is over-familiar with service staff.

✅ Možete li mi pomoći?

Can you help me? — formal Vi to service staff and strangers.

Key Takeaways

ti = one person, informal (family, friends, peers, children, animals, God); Vi = one person, formal (strangers, elders, superiors, service), and also the plain plural „you all".
The non-negotiable rule: formal Vi takes PLURAL verb agreement even for a single person — Vi ste…, Jeste li došli? — never the singular si / došao.
The past participle goes plural with Vi (došli, bili, rekli); only a standalone predicate adjective may optionally stay singular to match the real person (Vi ste umoran to a man) — but all-plural (Vi ste umorni) is the modern default and always safe.
In writing, capitalise the respectful singular Vi, Vas, Vam, Vaš; keep the plural „you all" lowercase.
Two people switch from formal to informal with Možemo na ti? / Hajdemo na ti — usually offered by the elder, the woman, or the senior person.

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