du vs Sie: Address and Formality

English has one word for "you," and it covers everyone: your best friend, your boss, a stranger on the train, the Queen. German does not. It splits "you" into an informal form — du in the singular, ihr in the plural — and a formal form, Sie, used for both singular and plural. Choosing between them is one of the very first decisions you make in almost every German conversation, and unlike most grammar, the rule is not about sentence structure at all. It is about your relationship to the person you are talking to. A perfectly grammatical sentence with the wrong pronoun can be rude; a clumsy sentence with the right one is forgiven instantly. This is a social skill dressed up as grammar.

The three forms at a glance

There are three "you" pronouns, and they sort along two axes — how many people, and how close you are to them.

• du — one person you are close to or on equal, casual terms with: friends, family, children, classmates, pets, and (increasingly) peers in informal settings.
• ihr — the plural of du: a group of people you would each address as du.
• Sie — the formal "you," for both one person and a group: strangers, officials, shopkeepers, professional contacts, anyone you owe respect or distance. It is always capitalised, in the middle of a sentence as much as at the start.

Verb agreement: the three forms behave differently

Each pronoun pairs with its own verb form, and Sie is the one that surprises English speakers: it takes the plural verb form (identical to the third-person plural sie = "they"), even when you are addressing a single person.

The capital letter on Sie is not decoration — it distinguishes formal "you" (Sie) from "they" / "she" (sie) in writing, since both take the same verb form. Sie kommen = "you (formal) are coming"; sie kommen = "they are coming." In speech, context and the situation tell them apart.

The same request, twice

The cleanest way to feel the difference is to say the same thing to a friend and to a stranger. The propositional content is identical; only the social temperature changes.

Notice the Sie versions also tend to pick up extra softeners — könnten instead of können, zufällig ("by any chance") — because formality and politeness travel together. But the core switch is the pronoun and its verb.

The social rules: who offers the du

Here is the part no English instinct prepares you for. Moving from Sie to du with someone is a small social event, not a casual drift. It is usually offered explicitly, and there is etiquette about who does the offering: traditionally the senior person — older, or higher in rank — proposes the du to the junior one. A common formula is Wollen wir uns duzen? ("Shall we use du with each other?") or Sag doch einfach du ("Just say du").

German even has two verbs for this: duzen (to address someone with du) and siezen (to address someone with Sie). The existence of these verbs tells you how real the distinction is — it is a thing you actively do to someone.

Who gets du, who gets Sie

The defaults are clear, even if real life has grey zones:

• du: close friends, family members, children (roughly up to their late teens), fellow students, pets, God in prayer, and — in many circles — peers of a similar age in relaxed settings.
• Sie: adult strangers, shop and restaurant staff (to and from customers), officials, doctors, teachers (from students, in most schools), business contacts, neighbours you do not know well, and anyone in a clearly professional relationship.

Regional and generational variation

The boundary is not fixed. Younger people increasingly use du with each other on first meeting, and in some workplaces — start-ups, creative industries, and famously the furniture retailer IKEA — du is company policy regardless of age. Some regions lean more readily toward du than others. And online, on social media and in many forums, du is close to universal among strangers. None of this abolishes the rule; it just means the safe default (Sie with adult strangers) coexists with pockets where du has become normal. When in doubt in a new setting, listen to how people address each other and follow suit, or simply start with Sie and let the other person offer du.

A small spelling note: in personal letters and emails, the informal pronouns du, dich, dir, ihr, euch were once capitalised out of courtesy. The 1996 spelling reform made this optional, so lowercase is now standard, though you will still see the old capitalised Du in heartfelt or old-fashioned letters. The formal Sie / Ihnen / Ihr is always capitalised — that has never changed.

Common Mistakes

1. Defaulting to du because English has no T–V distinction. English speakers, used to one universal "you," reach for du with everyone — which can come across as presumptuous or disrespectful to a stranger or official.

2. Using ihr to address a formal group. ihr is the plural of du, so it is informal. A group of strangers or clients gets Sie, not ihr.

3. Giving Sie a singular verb. Because Sie can mean one person, learners attach a singular verb. Formal Sie always takes the plural form.

4. Forgetting to capitalise formal Sie. In writing, the capital is what separates "you" from "they/she." Lowercasing it changes the meaning.

5. Treating the switch to du as automatic once you're friendly. du is normally offered, often by the senior person. Jumping to it unilaterally with an older or more senior person can be a faux pas.

Key Takeaways

• German splits "you" into informal du (singular) / ihr (plural) and formal Sie (both numbers).
• Sie always takes the plural verb form and is always capitalised in writing.
• The choice is social, not grammatical: Sie is the safe default with adult strangers; switching to du is a deliberate, usually offered, social step.
• Variation is real — younger people, some workplaces, and online settings use du more freely — but the default still holds when you are unsure.
• Getting it wrong is a pragmatic stumble, not a grammar mistake, so err toward Sie and let the du be offered to you.