Preposition: on

• dodger: New legislation has given police greater powers to crackdown on car insurance dodgers.

• yob: Today, Cabinet ministers will launch a £ 150,000 advertising campaign warning of a crackdown on drunken yobs.

• truancy: A major crackdown on truancy has begun, with patrols in the Bedford and Kempston area now in progress.

• dissent: It's a new level of crackdown on dissent.

• avoidance: Comment: The Government's crackdown on tax avoidance continues apace.

• piracy: German police have carried out their biggest ever crackdown on internet piracy in probe against 126 members of an online hackers ' forum.

Adjective modifier

• brutal: I wonder, a little disturbed, whether a brutal police crackdown on hustlers is responsible.

• nationwide: Seven people have been arrested as part of a nationwide crackdown on the trafficking of women into a life of vise.

• bloody: He also has been linked to the bloody crackdown on Shiites in southern Iraq following a 1991 uprising following the Gulf War.

• massive: The Sun newspaper splashes on its front page details of a massive internal crackdown on Internet porn surfing at the DWP.

• tough: Speeding motorists in the North East are facing a tough crackdown as part of a new campaign aimed at driving them off our roads.

• violent: The Nazis conspired to burn down the Reichstag and blame it on the Communists as a precursor to a violent crackdown on them.

Converse of object

• launch: Police are set to launch a major crackdown on speeding pedal cyclists.

• announce: The council has announced a crackdown on anyone found to be dumping rubbish illegally â a crime carrying a maximum fine of £ 50,000.

• promise: To tackle the menace, ministers promised a crackdown on poor hygiene with hospitals ranked in a league table of cleanliness.

• begin: The Transport Secretary saw West Midlands police in action as they began the crackdown.

• face: MORE FROM NORTHERN IRELAND Motorists face holiday crackdown Police warn that misbehaving motorists will face a crackdown over the Bank Holiday weekend.

• welcome: Some English teachers working legally have, however, welcomed the crackdown, saying illegal workers are harming the profession.

Noun used with modifier

• police: Police launch crackdown on drug dealers Orkney police have launched a two-week crackdown on drug dealers.

• operation: Operation Crackdown Help us to reduce the number of abandoned vehicles in Sussex.