Ax — 1) to dismiss smb.: "Steve got axed for a disloyal act”
2) to cancel: " The festival was axed due to the epidemics”.
3) exclude, cut off: "The retail chain axed a few branches last month”

Clamp — attach something very strongly by using authority:
"The judge clamped a restraining order on Jane’s ex-husband”

Clamp down on sb/sth — take action to stop or control smth:
"The government clamped down on Internet Pornography”.

Hammer — to defeat somebody severely: "Chicago Bulls hammered the New York team in the finals.

Hammer away — 1) talk or criticize somebody severely: "Mass media kept hammering at Internet pornography”
2) To achieve or try to achieve smth persistently: They were hammering away at a compromise for a month and got it.

Fork over — pay or give money reluctantly: "If you don’t fork over the cash tonight, I’ll go to the law”.

Nail — 1) arrest or convict for a crime: The cops nailed him for burglary.

Nail down — express precisely: "It is difficult to nail down the meaning of the word”.