The dollar fell against a basket of currencies on Wednesday as a batch of disappointing U.S. data on consumers, housing and manufacturing raised concern that the world's biggest economy is losing momentum in the final months of 2014.
Volume was lighter than average ahead of the U.S. Thanksgiving holiday on Thursday when U.S. financial markets will be closed. Many U.S. traders are expected to stay out of the office on Friday when markets reopen.
The greenback's decline was limited by expectations that the Federal Reserve might consider lifting short-term U.S. interest rates from near zero in mid-2015 as other major central banks recently loosened monetary policies to help their economies, analysts said.
The dollar index, a gauge of the greenback's value against a basket of the euro, the yen and four other currencies, fell 0.3 percent at 87.635, below the near 4-1/2 year peak of 88.440 reached on Monday.
The dollar was 0.4 percent lower at 117.51 yen, which was below the seven-year high of 118.98 seen last week.
The euro gained 0.3 percent against the dollar at $1.2514, extending its rebound from nearly a two-year low of $1.2358 earlier this month.
The single currency overcame an earlier drop against the dollar after European Central Bank Vice President Vitor Constancio said the bank could gauge in the first quarter of 2015 whether it needed to buy government bonds.
The hit a four-year low against its U.S. counterpart at $0.8481 earlier Wednesday before recovering on the disappointing U.S. data. It was last up 0.07 percent at $0.8533 in U.S. trading.
The Aussie has been one of the biggest decliners during the dollar's rally since July. Reserve Bank of Australia Deputy Governor Philip Lowe propelled it to its lowest since August 2010 on Tuesday by saying it was still overvalued.