The phrase “unprecedented decisions” is correct and usable in written English.
You can use it to describe a situation where a decision or action was rare or unexpected in comparison to similar situations. For example, “The CEO had to make some unprecedented decisions to reduce the company’s costs.”.
Before the meeting, voices from all over the world - economists, rock singers, ecologists, religious leaders - appealed, in the name of conscience and solidarity, for new, unprecedented decisions, for some change that might improve the planet's future chances.
Many mainstream anti-abortion groups even shy away from supporting these unprecedented decisions: neither National Right to Life, nor Americans United for Life, nor the Roman Catholic Church have campaigned for them.
Mr. Bernanke was referring to the Fed's unprecedented decisions last year to step in and financially back JPMorgan Chase's takeover of the troubled investment house Bear Stearns and throw the first of four financial lifelines to the insurance giant American International Group.
British Speedway management committee member David Hoggart said: "The weather this year has placed the sport in uncharted territory and we have had to make unprecedented decisions to maintain some sort of continuity of racing.
The country will have to make some unprecedented decisions about who gets paid, said Akapas.
Interestingly, in that same case, Michigan v. Environmental Protection Agency, decided last June, Justice Scalia wrote one of his most unprincipled and unprecedented decisions.
"It's an unprecedented decision," Mr. Mutko told Interfax.
It contributed, one suspects, to Pope Benedict XVI's almost unprecedented decision, in 2013, to resign.
The prime minister, Tony Abbott, denounced the "unprecedented" decision, saying it set "a dangerous precedent".
The federal agency makes an unprecedented decision in response to last week's federal injunction.
"We are surprised by Saudi Arabia's unprecedented decision," the Foreign Ministry said in a statement from Moscow carried by news agencies.
