Aufbau

[ˈaʊ̯fˌbaʊ̯]

/[ˈaʊ̯fˌbaʊ̯]/ noun

The verdict

“Aufbau” is a regularly-used German word, ranked #2,189 in German word frequency and used as a noun.

#2,189
frequency rank, German
6
letters
7
tracked misspellings
11
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - der Vorgang des Aufbauens eines Gebäudes, eines Systems oder einer sonstwie gearteten Struktur

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

Aufbau vs Ausbau
83% similar
Aufbau vs aufgab
50% similar
Aufbau vs aufkam
50% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for Aufbau
PropertyValue
HeadwordAufbau
LanguageGerman
Part of speechNoun
IPA[ˈaʊ̯fˌbaʊ̯]
Letters6
Frequency rank#2,189
Misspellings tracked7
Confusable pairs11
SourceWiktionary (kaikki.org)

Where “Aufbau” sits in German frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). Aufbau lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The German entry for Aufbau is 6 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as [ˈaʊ̯fˌbaʊ̯]. Corpus data places it at rank #2,189 in overall German word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 3 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 7 likely wrong-spelling variants for Aufbau, with forms such as "afubau", "aubfau", and "aufabu". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 11 confusable-pair relationships, "Ausbau", "aufgab", "aufkam", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.

No borrowing history is documented for this entry, so its spelling pattern is best understood through pronunciation rather than a traceable origin. The correct German form is Aufbau, spelled A-U-F-B-A-U.

Definition

  1. 1
    der Vorgang des Aufbauens eines Gebäudes, eines Systems oder einer sonstwie gearteten Struktur
  2. 2
    die Gliederung oder Struktur eines bestehenden Systems (innerer Aufbau)
  3. 3
    ein Aufsatz oder etwas Aufgesetztes auf ein bestehendes System (oberer Teil eines Gebäudes, einer Karosserie, eines Schiffes)

Synonyms

Antonyms

This word in other languages

Common misspellings

Also misspelled as: afubau,aubfau,aufabu,aufbbau,aufbua,auffbau,uafbau

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of Aufbau - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

afubau2aubfau2aufabu2aufbbau1aufbua2auffbau1uafbau2
Edit distance from "Aufbau"

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 German corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "Aufbau"?
"Aufbau" is spelled A-U-F-B-A-U. The IPA pronunciation is [ˈaʊ̯fˌbaʊ̯].
What does "Aufbau" mean?
As a noun, "Aufbau" means: der Vorgang des Aufbauens eines Gebäudes, eines Systems oder einer sonstwie gearteten Struktur
What words are commonly confused with "Aufbau"?
"Aufbau" is commonly confused with "Ausbau", "aufgab", "aufkam". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "Aufbau"?
The IPA (International Phonetic Alphabet) transcription for "Aufbau" is [ˈaʊ̯fˌbaʊ̯]. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "Aufbau" come from?
"Aufbau" is a German word. PlainSpell covers definitions, pronunciations, and spelling data across English, Spanish, Portuguese, French, and German.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “Aufbau”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct German spelling is A-U-F-B-A-U - every other letter order is a misspelling in standard orthography.
  • Say it as [ˈaʊ̯fˌbaʊ̯] (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “Ausbau” - see the side-by-side comparison. Aufbau vs Ausbau
  • Browse more German words and confusable pairs in the same reference. German words
Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list