The euro fell slightly against the dollar Thursday, giving back some ground after the U.S. Federal Reserve said it would leave interest rates unchanged for the time being and the European Central Bank again hinted that a rate increase is possible as early as its next meeting, according to AP. The 15-nation euro bought US$1.5646 in morning European trading, down from US$1.5667 in late New York trading Wednesday. The British pound fell slightly to US$1.9720 from US$1.9727 on Wednesday, while the dollar edged up to buy 108.09 Japanese yen from 107.93 yen the night before. The Fed's decision to keep the federal funds rate unchanged at 2 percent Wednesday was widely expected by financial markets. It marked the first time in 10 months that the central bank has failed to reduce interest rates at one of its regular meetings.