interference
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interference
Unwanted or unauthorized intervention in the affairs of other people or states. The term has a strongly negative connotation.
Ich verbitte mir jede Einmischung in meine privaten Angelegenheiten.
I will not tolerate any interference in my private affairs.
'Die Einmischung' (interference) is a noun derived from the reflexive, separable verb 'sich einmischen' (to interfere). It describes the act of interfering.
Misch dich bitte nicht in meine Angelegenheiten ein!
Please don't interfere in my affairs!
The noun 'Einmischung' (interference) is almost always used with the preposition 'in' + accusative to say what someone is interfering in.
Das war eine Einmischung in meine Privatsphäre.
That was an interference in my privacy.
Because the word is negative, it is often used with verbs of forbidding or rejecting, e.g. 'sich eine Einmischung verbitten' (to forbid/take exception to interference) or 'keine Einmischung dulden' (to tolerate no interference).
Ich verbitte mir jede weitere Einmischung von deiner Seite!
I will not tolerate any further interference from you!
intervention / procedure
Eingriff and Einmischung both refer to influencing existing affairs or processes. An Eingriff can be lawful or institutionally authorized. Einmischung, by contrast, characterizes the involvement as unwanted or unauthorized. Eingriff is therefore the better choice for an authorized measure.
Die ungebetene Einmischung eines Außenstehenden in den Prozess sorgte für Ärger.
The unwelcome interference of an outsider in the process caused trouble.
Der Eingriff der Aufsichtsbehörde in den Prozess war gesetzlich vorgesehen.
The regulatory authority’s intervention in the process was legally authorized.
