Definition of crack down on in English:

crack down on

phrasal verb

informal
  • Take severe measures against.

    ‘the police will crack down on criminals’
    • ‘Police are cracking down on crime in Bradford and have secured reductions in the rates of burglary, robbery and car crime.’
    • ‘Its still illegal, but what this does mean is that the police are cracking down on the harder drugs, like cocaine and heroin.’
    • ‘The Executive has introduced measures through the police bill to crack down on knife culture.’
    • ‘The relationship between citizens and police has changed since the police started cracking down on organized crime.’
    • ‘The government has cracked down on more complex tax-avoidance schemes.’
    • ‘Sydney police have promised to crack down on all such surreptitious snapping.’
    • ‘Effective prevention of petty crimes such as theft will enable the police to focus their efforts on cracking down on hard crime.’
    • ‘An Executive source said this was typical of the chaos it hoped the new commissioner would crack down on.’
    • ‘Where these are not cracked down on immediately then further, and worse, anti-social behaviour usually follows.’
    • ‘Labour has taken tough measures to crack down on crime and anti-social behaviour.’
    get tough on, take severe measures against, take stern measures against, clamp down on, come down heavily on
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