To take decisive and strict measures in order to restore order, enforce rules, or counteract an undesirable development.
example
Nach wiederholten Verstößen kündigte die Schulleitung an, härter durchzugreifen.
After repeated violations, the school administration announced that it would crack down harder.
Usage tips
Separable verb
'Durchgreifen' (to crack down) is a separable verb. The prefix 'durch' comes at the end in a main clause, but remains attached to the verb in a subordinate clause.
EXAMPLE
Der neue Chef greift bei Unpünktlichkeit sofort durch.
The new boss cracks down immediately on lateness.
Meaning of the parts
The verb consists of 'durch' (through) and 'greifen' (to grasp). While 'greifen' means to grasp, 'durch' here reinforces the idea of decisiveness and overcoming resistance.
EXAMPLE
Die Eltern mussten bei ihrem Sohn durchgreifen, damit er seine Hausaufgaben macht.
The parents had to crack down on their son so that he would do his homework.
Use with 'gegen'
'Durchgreifen' (to crack down) is often used with the preposition 'gegen' + accusative to say what the strict measures are directed against.
EXAMPLE
Die Polizei will härter gegen Drogenhandel durchgreifen.
The police want to crack down harder on drug trafficking.
Compare with
near_synonym · confusable
durchgreifen vs durchsetzen
to push through / to assert oneself / to permeate
'durchsetzen' and 'durchgreifen' both have to do with resistance, rules, or problems. 'durchsetzen' means that a plan, demand, or one's own will succeeds in the end, even though others are against it. 'durchgreifen' means that someone acts strictly and decisively in order to create order or make rules really apply. Learners may confuse the words because rules can both be pushed through and applied when someone cracks down. As a guide: you push through an idea or opinion; a boss, the police, or a teacher cracks down when they act strictly.
durchgreifen
Im Kurs greift die Lehrerin heute durch, weil viele ständig zu spät kommen.
In the course, the teacher is cracking down today because many people keep arriving late.
durchsetzen
Nach langer Diskussion setzt sie ihren Vorschlag im Team durch.
After a long discussion, she pushes her proposal through in the team.