Forms of Address and the du/Sie Decision

English has one word for "you." German has two, and choosing between them is the single most important social decision you make every time you open your mouth: du (informal) or Sie (formal). This is not a grammar nicety — it encodes the whole nature of your relationship with the person, and getting it wrong can be genuinely awkward or even offensive. This page teaches the rules of address: when each pronoun is right, who decides to switch from Sie to du, the verbs duzen and siezen, and how titles fit in.

The two pronouns and their verb forms

du is the informal, intimate "you" (singular). Sie (always capitalized) is the formal "you," used for one person or several. A key trick: formal Sie takes the same verb form as the third-person plural "they" — so Sie kommen means both "they come" and "you (formal) come," distinguished by context and the capital letter.

When to use Sie

Sie is the default with any adult you don't know and signals respect and social distance. Use it with:

• Strangers and adults in public — shop assistants, officials, people on the street.
• Anyone in a professional or business setting you don't know well: clients, customers, most new colleagues.
• People in positions of authority — your doctor, your boss, a police officer, a professor.
• Older people, unless they invite otherwise.

When unsure with an adult, choose Sie. It is never rude to be slightly more formal than necessary; it is potentially rude to be too familiar.

When to use du

du marks closeness, equality, or membership in the same group. Use it with:

• Family and close friends.
• Children and teenagers (everyone uses du with kids).
• Fellow students — students duzen each other automatically, regardless of acquaintance.
• People your own age in informal, social settings (a party, a hostel, a hobby club).
• Increasingly, colleagues in casual industries (tech, startups, creative fields) and online.

The verbs duzen and siezen

German has dedicated verbs for the act of addressing: duzen ("to say du to someone") and siezen ("to say Sie to someone"). You will hear these constantly when people negotiate the relationship.

The switch from Sie to du is a social event

Here is the insight that learners most often miss: moving from Sie to du with someone is not automatic and not unilateral. It is a small ceremony, and the right to offer it belongs to the higher-status or older person — the senior colleague, the older person, the host. The junior or younger party waits to be offered.

Common ways the offer is made:

Accepting is usually as simple as a smile and switching, often sealed with a handshake or a clinked glass and a first name. After the offer, you stay on du; switching back to Sie would be a pointed snub.

Titles and names

The pronoun pairs with a naming convention:

• Sie + Herr/Frau + surname: the standard respectful address. Herr Schmidt, Frau Wagner.
• du + first name: the standard informal address.
• Academic titles (Dr., Professor) are used in formal contexts, especially in writing and in fields like medicine and academia: Frau Dr. Klein, Herr Professor Vogel. In everyday speech outside those fields they are often dropped.

Two hybrid forms exist but should be recognized, not imitated by learners:

• The "Hamburger Sie": Sie
  • first name (e.g., a manager saying "Lisa, könnten Sie...?"). It is a halfway register, common with younger staff in service jobs — formal pronoun, informal name.
• du
  • surname is rare and usually marks specific subcultures (some trades, the military, old-school sports teams).

Regional and generational notes

• The south (Bavaria, Austria) is in some social settings a touch quicker to du in village and rural life, but formal contexts still demand Sie.
• Switzerland moves to the local du (Swiss Du) relatively readily in many social and even some work settings.
• Generational shift: younger Germans, and whole industries built around younger workforces, increasingly default to du. Big retailers like IKEA famously duzen all customers. But this is a trend, not yet the safe baseline — with an unknown older adult, Sie remains correct.

Common Mistakes

1. Defaulting to du because English has only one "you." With an adult stranger, this is too familiar and can read as disrespectful.

2. Switching to du on your own initiative. The offer comes from the senior/older party; jumping the gun is awkward.

3. Mixing du and Sie forms in one sentence. Once you choose, keep every pronoun, verb, and possessive consistent.

4. Lowercasing formal Sie or capitalizing du. Formal Sie/Ihnen/Ihr are capitalized; informal du/dich/dir are not (since the reform).

5. Using du + first name in a formal setting where Sie + surname is expected. First-naming a new adult contact can feel pushy.

Key Takeaways

• du = informal (family, friends, children, fellow students, peers in casual settings); Sie = formal (adult strangers, authority, business, older people). When unsure with an adult, choose Sie.
• Formal Sie/Ihnen/Ihr are always capitalized; informal du/dich/dir are lowercase.
• Sie uses the third-person plural verb form (Sie kommen).
• The switch to du is a social event offered by the senior/older party (Wollen wir uns duzen?); don't initiate it upward yourself.
• Pair Sie with Herr/Frau
  • surname and du with the first name; academic titles appear in formal contexts.