Tykání and Vykání: The T/V Distinction

Every time you say "you" in Czech, you make a social decision that English lets you skip. Czech has two words for "you" — informal ty and formal vy — and which one you use tells the other person exactly how you see your relationship: intimate or distant, equal or deferential. Using them well is one of the clearest markers of a culturally fluent speaker, and using them badly can quietly offend without your ever knowing why. This is the central page on the distinction; the specific errors learners make are catalogued separately on mixing vy and ty.

English has no equivalent — and that's the whole problem

Modern English has a single "you" for the queen and for the cat. It once had the pair thou (intimate) and you (respectful), but thou died out around the seventeenth century, taking the whole system with it. So as an English speaker you have no working instinct for what linguists call the T/V distinction (from Latin tu / vos) — the very thing you now have to track in every Czech sentence. The two systems even have names you'll hear Czechs use: tykání (being on ty terms) and vykání (being on vy terms).

ty — the informal "you"

ty is the language of closeness. You use it with:

• family — parents, siblings, grandparents, your own children;
• close friends and anyone you've explicitly agreed to be on ty terms with;
• children and teenagers (adults address kids with ty);
• peers in a casual setting — fellow students, people your own age at a party, online communities, often colleagues once the team is relaxed.

vy — the formal "you" — and it's grammatically plural

vy is the language of respect and distance. You use it with:

• strangers — anyone you don't know, in shops, on the street, by phone;
• older people you aren't close to;
• superiors and authority — your boss, officials, police, doctors;
• professional and service contexts in general.

The structurally surprising part for English speakers: vy is the same word as plural "you", and it stays grammatically plural even when you're addressing one single person. The verb goes into its plural form regardless.

A subtle point: plural verb, but the adjective stays singular

Here is a nuance even confident learners get wrong. With vy to one person, the verb is plural, but a predicate adjective or past participle agrees with the person's real number and gender — so it stays singular. You hold two agreements at once.

So the verb says "plural" out of respect, while the adjective quietly tells the truth about who's actually standing there. The mechanics are detailed on the formal vy page.

The choice propagates through the whole conversation

ty and vy are not just two pronouns you can swap in isolation — they pull a whole wardrobe of forms with them. Choose a register and you've committed your greetings, your commands, and your possessives along with it.

Even the greeting alone betrays the register: walking up to a stranger with ahoj is as off as opening with dobrý den to your best friend. For the greeting inventory, see greetings and politeness.

The default and the social rules

When in doubt, start with vy. Defaulting to formality with an adult you don't know is never wrong — at worst it's a touch stiff, and they can invite you down to ty. Defaulting to ty, by contrast, risks reading as disrespectful or childish, and you can't easily take it back. Concretely:

• Adults you don't know → vy. Always your safe opening move.
• Children → ty (and they'll say vy back to you).
• Peers in a clearly casual setting (a party, a hostel, a hobby group) → ty is usually fine, especially among the young.
• Workplace varies: many Czech offices are on ty internally but vy with clients; follow what your colleagues do.

Negotiating the switch: the offer of tykání

You do not slide from vy to ty on your own. The change is a small social ritual, and it is normally the senior person — older, higher in rank, or by tradition the woman in a mixed pair — who offers it. The classic line is Můžeme si tykat? ("Can we be on ty terms?"). Accepting is warm; the two may even toast to it (připít si na tykání).

Once the offer is accepted, you switch completely and don't drift back — going formal again afterwards would read as a deliberate cooling of the relationship. And crucially: a junior person unilaterally starting to use ty with a senior they haven't been invited to is a real breach of etiquette, not a friendly gesture.

A historical footnote: onikání

You may meet a third system in nineteenth-century novels or period films: onikání, addressing someone with the third-person plural oni ("they") as an extra-deferential form (servant to master). It is thoroughly (archaic) — no living Czech uses it seriously — but it's worth recognizing so you don't mistake it for a modern option. Today the live system is just the two: ty and vy.

Common mistakes

Key takeaways

• Czech splits "you" into informal ty (tykání) and formal vy (vykání) — a distinction English lost centuries ago.
• ty: family, close friends, children, casual peers. vy: strangers, elders, superiors, professional life.
• vy is grammatically plural even for one person — the verb is plural (Jste…?), but a predicate adjective stays singular and gendered (unavený / unavená).
• The choice propagates through greetings, imperatives, and possessives — commit to one register per person.
• Default to vy with adults you don't know; the switch to ty is offered by the senior party (Můžeme si tykat?), not seized unilaterally.