aufbauen

Meaning in English

aufbauen is a separable German verb with several common meanings:

1. to build / to construct / to assemble

   • creating something physically (a building, a tent, a stage, a device)
   • Beispielgedanke: ein Regal aufbauen = to assemble a shelf

2. to set up / to establish

   • creating or organizing something non-physical (a company, a system, structures, contacts)
   • Beispielgedanke: eine Firma aufbauen = to build up / establish a company

3. to build up / to develop / to strengthen

   • improving something over time (skills, confidence, muscle, endurance, trust)
   • Beispielgedanke: Muskeln aufbauen = to build muscle
   • Beispielgedanke: Vertrauen aufbauen = to build trust

4. (technology/media) to load / to bring up (a page, a connection)

   • Beispielgedanke: eine Webseite aufbauen = to load a website (German usage, especially in tech contexts)

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Word parts (structure)

• auf- = “up”, “onto”, “open/start” (often indicates starting or building something up)
• bauen = “to build”

Because it is separable, in many tenses the prefix moves to the end:

• Ich baue das Zelt auf.
  But in infinitive/zu-infinitive it stays together:
• das Zelt aufzubauen

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German synonyms (depending on meaning)

• Physical building/assembling: bauen, errichten, aufstellen, montieren, zusammenbauen
• Establishing something: gründen, errichten, einrichten, etablieren
• Building up/strengthening: entwickeln, steigern, ausbauen, stärken, fördern
• Tech “load”: laden, aufrufen

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German antonyms (if applicable)

• For building/assembling: abbauen (to dismantle), abreißen (to tear down)
• For establishing/building up: auflösen (to dissolve), zerstören (to destroy)
• For strengthening/building up: abbauen (to reduce, to lose—e.g., muscles), schwächen (to weaken)