The abbreviation for 'Größter Anzunehmender Unfall' (maximum credible accident). Colloquially, the term is used for a catastrophe or the worst possible scenario.
example
Wenn jetzt auch noch die Heizung ausfällt, ist das der GAU.
If the heating breaks down now too, that will be the worst-case scenario.
Usage tips
Recognizing the meaning from context
The capitalization 'GAU' always points to the catastrophe meaning. With lowercase spelling, context helps: if people are talking about sports, it means an association; in historical texts about the Nazi era, it means an administrative unit.
EXAMPLE
Ein Brand im Chemiewerk wäre der GAU für die ganze Stadt.
A fire in the chemical plant would be the worst-case accident for the whole city.
Abbreviation: GAU
'GAU' is the abbreviation for 'Größter Anzunehmender Unfall' (maximum credible accident). Originally coming from nuclear engineering, it is now used colloquially for any major catastrophe or the worst possible scenario.
EXAMPLE
Die Festplatte ist kaputt und das Backup auch, das ist der absolute GAU.
The hard drive is broken and the backup is too; that is the absolute worst-case scenario.
Historical context
This meaning is inseparably connected with the period of National Socialism (1933-1945) and has a strongly negative connotation. Outside historical discussions, the word is not used in this sense.
EXAMPLE
In der Ausstellung über das Dritte Reich gab es eine Karte mit den Gauen und ihren Gauleitern.
In the exhibition about the Third Reich, there was a map with the Gaue and their Gauleiter.
Use in sports
In this meaning, 'Gau' is found almost exclusively in the names and contexts of traditional sports associations. Typical examples are Turngau, Schützengau, or Sängergau.
EXAMPLE
Die Turner bereiten sich auf das Gauturnfest vor.
The gymnasts are preparing for the regional gymnastics festival.
Preserved in place names
The old meaning 'Landschaft' (landscape) or 'Gebiet' (area) is still visible today in many German regional and place names. Examples are the 'Rheingau', the 'Breisgau', or the 'Allgäu'.
EXAMPLE
Der Rheingau ist eine berühmte Weinregion in Hessen.
The Rheingau is a famous wine region in Hesse.
Compare with
near_synonym
Gau vs Region
region
'die Region' and 'der Gau' can both mean an area or district. Today, 'Region' is a normal, neutral word for a geographical area, and sometimes also for an administrative area. 'Gau', on the other hand, is only appropriate in certain contexts: historical, outdated, or in some clubs and sports associations. In addition, because of its historical use, 'Gau' can carry a politically sensitive connotation. In normal everyday language, people therefore almost always say 'Region'. You should only use 'Gau' when exactly this historical or organizational term is meant.
Gau
Der Turnverein gehört zu einem Gau, der mehrere Orte umfasst.
The gymnastics club belongs to a regional association that includes several towns.
Region
Diese Region ist für ihre alten Dörfer und guten Wanderwege bekannt.
This region is known for its old villages and good hiking trails.