The Federal Reserve's dovish December pivot has boosted the case for the weakening dollar to keep falling into 2024, though strength in the US  economy could limit the greenback's decline.

After soaring to a two-decade high on the back of the Fed's rate hikes in 2022, the US  currency has been largely range-bound this year on the back of resilient US  growth and the central bank's vow to keep borrowing costs elevated.

The dollar was on track for a 2 percent loss this year against a basket of its peers , its first yearly decline since 2020.

The December Fed meeting marked an unexpected shift, after Chairman Jerome Powell said the historic monetary policy tightening that brought rates to their highest level in decades was likely over, thanks to cooling inflation. Policymakers now project 75 basis points of cuts next year.

Falling rates are generally seen as a headwind for the dollar, making assets in the US  currency less attractive to yield-seeking investors. Though strategists had expected the dollar to weaken next year, a faster pace of rate cuts could accelerate the currency's decline.

Still, betting on a weaker dollar has been a perilous undertaking in recent years, and some investors are wary of jumping the gun. A US  economy that continues to outperform its peers could be one factor presenting an obstacle for bearish investors.

The Fed's aggressive monetary policy tightening, along with post-pandemic policies to boost US  growth, "fueled the notion of American exceptionalism and delivered the most powerful dollar rally since the 1980s," said Kit Juckes, chief FX strategist at Societe Generale.

With the Fed set to ease policy, "some of those gains should be reversed," he said.

Getting the dollar right is key for analysts and investors, given the US  currency's central role in global finance.

For the US , a weak dollar would make exports more competitive abroad and boost the profits of multinationals by making it cheaper to convert their foreign profits into dollars. About a quarter of S&P 500 companies generate more than 50 percent of revenues outside the US , according to FactSet data.

An early December Reuters poll of 71 FX strategists showed expectations for the dollar to fall against G10 currencies in 2024, with the greater part of its decline coming in the second half of the year.

Whether they're right may come down to how the US  economy performs compared to its global peers next year and the pace at which central banks adjust monetary policy.

So far, it's been an uneven picture. In the eurozone, a downturn in business activity deepened in December, according to closely watched surveys that show the bloc's economy is almost certainly in recession. Still, the European Central Bank has pushed back against rate cut expectations as it remains focused on fighting inflation. The euro is up more than 3 percent against the dollar this year.

The "growth slowdown is more entrenched in other economies," said Thanos Bardas, senior portfolio manager at Neuberger Berman, who is bullish on the dollar over the next 12 months. "For the US  it will take a while for growth to slow down."

Others, however, see areas of strength, particularly in Asian economies. Paresh Upadhyaya, director of fixed income and currency strategy at Amundi US, says he believes the market is "way too pessimistic" on the outlook for growth in China and India. Accelerating growth could boost the countries' appetite for raw materials, benefiting commodity currencies such as the Australian, New Zealand and Canadian dollars.

China will step up policy adjustments to support an economic recovery in 2024, according to state media reports.

Jack McIntyre, portfolio manager at Brandywine Global in Philadelphia, is counting on US  growth slowing while Chinese growth picks up. He has been selling the dollar to fund the purchase of Asian currencies.

"The dollar's bull run is very mature," he said.

The International Monetary Fund in October forecast the US  economy would grow by 1.5 percent in 2024, compared to 1.2 percent for the eurozone and 4.2 percent for China.

Of course, the dollar's trajectory could depend on how much Fed easing and falling inflation is already reflected in its price. Futures tied to the Fed's policy rate show investors factoring in more than 150 basis points in cuts next year, about twice as much as Fed policymakers have penciled in.

"If inflation stalls and does not continue to decline that's where the case grows for the Fed to hold off," said Matt Weller, head of market research at StoneX. "That would certainly be a bullish development for the dollar."