inevitable
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inevitable
Describes something that is unavoidable or follows as a logical consequence of a particular situation or action. It must happen that way and cannot be otherwise.
Wenn man die Ursache nicht behebt, treten die Probleme zwangsläufig wieder auf.
If you don't fix the cause, the problems will inevitably occur again.
The word is made up of 'Zwang' (force/compulsion) and 'läufig' (from 'laufen', to run). It describes a consequence that, in a sense, 'runs under compulsion' and therefore cannot be stopped.
Eine höhere Nachfrage führt zwangsläufig zu höheren Preisen.
Higher demand inevitably leads to higher prices.
'Zwangsläufig' (inevitably) is often used as an adverb. It can stand at the beginning of the sentence in position 1, which leads to inversion (verb in position 2), or inside the sentence before the part it emphasizes.
Zwangsläufig musste er die Konsequenzen tragen.
Inevitably, he had to bear the consequences.
Common verbs combined with 'zwangsläufig' are 'führen zu' (to lead to), 'enden' (to end), 'resultieren in' (to result in), or 'passieren' (to happen). These combinations emphasize the logical and unavoidable consequence.
Ohne Investitionen wird die Qualität zwangsläufig sinken.
Without investment, the quality will inevitably decline.
necessary
'notwendig' and 'zwangsläufig' can both express that something cannot turn out differently because of a situation. 'zwangsläufig' especially emphasizes the logical consequence: if A happens, B follows almost automatically. 'notwendig' can also mean this, but it is very often used when something is needed or required. Learners may confuse the words because both have to do with 'it has to be this way'. When the point is a need or requirement, 'notwendig' fits better; when the point is an unavoidable consequence, 'zwangsläufig' is more precise.
Wenn alle Züge ausfallen, ist eine Verspätung fast zwangsläufig.
If all the trains are canceled, a delay is almost inevitable.
Nach dem Wasserschaden ist eine schnelle Reparatur notwendig.
After the water damage, a quick repair is necessary.