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crack down

Meaning: to start enforcing a law or a rule more strictly

Synonym: clamp down

For example:

  • crack down There's too much cheating in exams, so the teachers are cracking down and expelling anyone who's caught.

  • crack down on sb/sth The police are cracking down on drunk drivers, so if you drink before you drive you might end up in jail.

Quick Quiz:

The prime minister has promised to crack down on
  1. bad weather
  2. good drivers
  3. corrupt politicians

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