to contain / to dam
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to contain
To limit or stop the spread or negative effects of something. Often used for problems such as diseases, fires, crises, or inflation.
Die Regierung ergreift Maßnahmen, um die Ausbreitung des Virus einzudämmen.
The government is taking measures to contain the spread of the virus.
to dam
To surround an area, especially a body of water such as a river, with a dam or dike in order to control it or protect it from flooding.
Nach der Flutkatastrophe wurde beschlossen, den Fluss stärker einzudämmen.
After the flood disaster, it was decided to dam the river more heavily.
The word is made up of 'ein' and 'dämmen' (to dam/insulate). 'Dämmen' comes from 'der Damm' (the dam). The literal meaning is to surround something with a dam, which makes the figurative meaning 'to stop something' easy to understand.
Man versucht, die Gerüchteküche mit klaren Informationen einzudämmen.
They are trying to contain the rumor mill with clear information.
'Eindämmen' (to contain/to dam) is a separable verb. In a main clause, the prefix 'ein' goes at the end of the sentence. In subordinate clauses or in the infinitive, the verb stays together.
Die Feuerwehr dämmt den Waldbrand erfolgreich ein.
The fire department is successfully containing the forest fire.
In the figurative meaning, 'eindämmen' (to contain) is often used for negative developments: 'eine Krankheit eindämmen' (to contain a disease), 'die Inflation eindämmen' (to contain inflation), 'Gewalt eindämmen' (to contain violence), or 'die Klimakrise eindämmen' (to contain the climate crisis).
Die Zentralbank versucht, die hohe Inflation einzudämmen.
The central bank is trying to contain high inflation.
The context makes the meaning clear. If people are talking about a river or water, the literal meaning is intended. If people are talking about problems, crises, or diseases, the figurative meaning is intended.
Man muss den Fluss eindämmen, um die Stadt zu schützen.
The river has to be dammed to protect the city.
to limit / border
Begrenzen and eindämmen can both help keep negative consequences smaller. Begrenzen generally refers to a set limit, while eindämmen particularly emphasizes deliberately holding back a development that is spreading or could continue to worsen. Use begrenzen for a limit and eindämmen for such a development.
Die Feuerwehr versucht, die Ausbreitung des Feuers einzudämmen.
The fire department is trying to contain the spread of the fire.
Die Stadt begrenzt die Zahl der Fahrzeuge im gefährdeten Gebiet.
The city is limiting the number of vehicles in the danger zone.
