The phrase "accepted as a given" is correct and usable in written English.
You can use it when referring to a fact or truth that is generally accepted without proof. For example, "Good health is often accepted as a given, but it is a privilege and not a guarantee."
He describes omnipresent violence at a time when there is no war — a backdrop of brutality, accepted as a given.
The data reinforced what many on Wall Street had already accepted as a given: the Federal Reserve will hold interest rates steady at its meeting that ends Wednesday.
The passing of political conviction is accepted as a given whatever one's political conviction, but it is the left that stands to lose most.
"It's almost now being accepted as a given that the macroeconomy is on a very solid footing," said Bill Meade, managing director at RBC Capital Markets.
For three straight seasons, the Mets' ineptitude was accepted as a given, which did not sit well with a fan base that has shown up at Citi Field in decreasing numbers.
"The framework between the land conservancy and the family accepted as a given some things like the ability of the family to build several more homes on the land east of the highway that are not among our assumptions," Ms. Nichols said.
The episcopate is accepted as a gift given by God to the church, in which all Catholic bishops share equally, having been admitted thereto by bishops who themselves stand in unbroken historical succession from the time of the Apostles.
Economists generally accept as a given the old adage that there's no accounting for tastes.
His Americanism will be an idea that the G.O.P. can accept as a given or use to discredit itself.
Utopian visions here on Earth seem to accept as a given the ultimate triumph of the benevolent in mankind.
Many diplomats here also seem to accept as a given that President Clinton does not want a showdown with Iraq just before elections in the United States in November.
