"an explicit guarantee" is correct and usable in written English
You can use it when you want to refer to a guarantee or promise that is stated clearly and definitively. For example: "The store provided an explicit guarantee that if the item was not satisfactory, they would return the customer's money."
The EFSF bonds have an explicit guarantee so ought to be seen by investors as safer.
In return the industry received an explicit guarantee that the F.D.A. would not ban cigarettes outright.
Mr Assange's latest lawyer, Baltasar Garzón, a Spanish former magistrate, wants Sweden to provide an explicit guarantee that it will not send Mr Assange to the United States.
At the end of the day, America's Taiwan Relations Act is an explicit guarantee of security for Taiwan against Chinese military aggression.
To halt the decline, European governments should follow Ireland's lead and make an explicit guarantee of deposits to end potential distrust among depositors.
Donald Marron and Phillip Swagel, two economists who served in the administration of George Bush, say the federal government should sell an explicit guarantee at a rate designed to recoup future losses to Fannie, Freddie or a purely private competitor.
Even though a recovery will take time, investors and analysts said policy makers have little choice but to step in and provide a more explicit guarantee to creditors of the companies.
"The collapse turned an implicit public guarantee into an explicit public guarantee.
The government officials said that the administration had also considered calling for legislation that would offer an explicit government guarantee on the $5 trillion of debt owned or guaranteed by the companies.
At the time, the federal guaranteed student loan program operated on the basis of an explicit federal guarantee of loans made to students by thousands of private sector banks.
Now the fear is that their status as quasi-governmental institutions has been firmly cemented with a new regulator and an explicit federal guarantee of their solvency.
