| toughen law | 4.61 | The government is toughening antidrug laws. | ||
| toughen penalty | 3.23 | Would toughen penalties for violating orders of protection. | ||
| toughen stance | 2.24 | Major also toughened his stance Sunday. | ||
| toughen requirement | 1.78 | As a result, they are toughening requirements. | ||
| toughen sanction | 1.71 | The U.N. then toughened sanctions, but Gadhafi remained defiant. | ||
| toughen standard | 1.71 | They also blocked several attempts to toughen accounting standards. | ||
| toughen rule | 1.38 | But last year, the state toughened the rules to save money. | ||
| toughen enforcement | 1.18 | Dole would toughen enforcement of child support laws. | ||
| toughen measure | 1.12 | Not all the changes made by the Senate yesterday toughened the measure. | ||
| toughen regulation | 1.05 | Now, he is trying to get industrywide regulations toughened. | ||
| toughen sentence | 0.92 | He also said he would send Congress a bill to toughen sentences against convicted drug traffickers. | ||
| toughen stand | 0.86 | Switzerland also toughened its stand against Iran after the Berlin ruling. | ||
| toughen position | 0.72 | On both sides, people have responded to the violence by toughening their positions. | ||
| toughen policy | 0.66 | The guest policy was toughened last semester for security reasons, Grider said. | ||
| toughen resolve | 0.66 | That should toughen their resolve. | ||
| toughen restriction | 0.59 | Vote to toughen restrictions on immigrants. | ||
| toughen condition | 0.46 | The IMF has toughened its conditions for the release of further loans following the scandal. | ||
| toughen punishment | 0.46 | U.S. officials have long pressured Colombia to toughen its punishment for drug criminals. | ||
| toughen tone | 0.39 | But the conflict over weapons inspectors caused Paris to toughen its tone. | ||
| toughen approach | 0.33 | Even Mandela has toughened his approach. |