Skills on AI

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German Language

Use when asked to write, translate into, or check text in German (Deutsch) — a Germanic language with a four-case noun system, grammatical gender that must be memorized per noun, and long compound nouns — official in Germany, Austria, and Switzerland, with real regional variation.

German (Deutsch) is a Germanic language, official in Germany, Austria, and Switzerland, and widely spoken as a minority or co-official language elsewhere in Europe. Standard German (Hochdeutsch) is largely shared across these countries for formal writing, but real regional differences exist, especially in Switzerland.

Case system

German marks a noun's grammatical role with one of four cases — nominative (subject), accusative (direct object), dative (indirect object), and genitive (possession) — which changes the form of the article and often the adjective ending, and sometimes the noun itself. This has no direct English equivalent (English case survives only in pronouns: he/him/his). For example, "the dog" is "der Hund" (nominative), "den Hund" (accusative), "dem Hund" (dative), and "des Hundes" (genitive) — the article and even the noun's ending change depending on its role in the sentence. Case errors are one of the most common and noticeable mistakes in non-native or machine-generated German.

Grammatical gender

Every German noun has a grammatical gender — masculine (der), feminine (die), or neuter (das) — that must be memorized per noun rather than predicted from meaning. Some patterns help (many nouns ending in "-heit" or "-keit" are feminine; diminutives ending in "-chen" or "-lein" are always neuter regardless of the underlying noun's gender), but there is no fully reliable general rule, and gender is not optional: it determines article form and interacts with the case system, so getting it wrong compounds into further errors down the sentence.

Compound nouns

German freely forms long compound nouns by joining words together with no space, which can produce very long single words: "Rindfleischetikettierungsüberwachungsaufgabenübertragungsgesetz" (a historical, if extreme, real example) or the more everyday "Lebensversicherungsgesellschaft" (life insurance company). When translating into German, prefer building a genuine compound over an awkward multi-word phrase; when translating out of German, be prepared to decompose a long compound into its constituent parts to render it in English.

Formal/informal address

German distinguishes formal "Sie" from informal "du" for second-person address, and this affects verb conjugation, not just word choice — "Sie sind" (formal, also identical in form to third-person plural) versus "du bist" (informal) use different verb forms entirely. Choosing the wrong register is a genuine social error, not a stylistic nuance: use "Sie" by default for strangers, professional contexts, and anyone not explicitly invited to switch to "du" ("das Du anbieten"), and "du" for family, friends, children, and increasingly some informal workplace or online contexts.

Regional variation

Standard German is official in Germany, Austria, and Switzerland, but each has real differences in vocabulary, and Swiss Standard German has a distinctive orthographic feature: it does not use the letter "ß" (scharfes S / eszett) at all, writing "ss" instead even where German and Austrian standard spelling would use "ß" (e.g. "Strasse" in Switzerland vs. "Straße" in Germany/Austria). Austrian German also has its own vocabulary for many everyday and administrative terms distinct from both German and Swiss usage.

Common pitfalls

  • Guessing a noun's gender from its meaning in English or from a cognate's gender in another language, rather than using the noun's actual German gender.
  • Getting case endings wrong on articles and adjectives, especially after prepositions that take a specific case (or one of two cases depending on motion vs. location).
  • Using "ß" in Swiss German text, or omitting it in German/Austrian text where standard orthography requires it.
  • Defaulting to "du" in a professional or unfamiliar context where "Sie" is expected, or conjugating verbs for the wrong register after choosing the correct pronoun.
  • Translating a natural German compound noun as an awkward string of separate English-style words, or vice versa, forcing an unnatural compound into English.

Learn more

  • Swedish Language for a related Germanic language with a simpler two-gender system and no case-driven adjective endings for most everyday use.
  • Dutch Language for another closely related Germanic language.
  • Locale for broader internationalization considerations (date/number formats, etc.) that often accompany German-language text.

View german-language/SKILL.md on GitHub