The European Central Bank is deciding when to wind back its expansive quantitative easing program.
Doubts crept in as to whether the modest current economic expansion warrants further rate increases.
Commodity-linked currencies such as the Canadian dollar and Norwegian crown took a hit on declining oil prices.
An influential Federal Reserve official said U.S. inflation would pick up as wages improved.
The dollar nudged higher on Monday as New York Fed President William Dudley's comments came with doubts about raising rates.
The dollar fell against a basket of currencies on Friday on weaker-than-forecast data on housing and consumer sentiment.
The dollar rose to its highest level in more than two weeks on Thursday, one day after the Fed announced a quarter-point rate hike.
The dollar pared earlier losses against a basket of major currencies on Wednesday following the Federal Reserve's widely expected decision to raise short-term interest rates.
The U.S. dollar fell to its lowest against the Canadian dollar since late February on Tuesday.
The dollar dipped on the run-in to Wednesday's decision on US interest rates.
The dollar rose to a 10-day high, boosted by a weaker British pound after Theresa May's Conservative Party lost its parliamentary majority.
The euro fell more than half a percent on Wednesday after a report suggesting the ECB is preparing to cut its outlook for inflation.
The dollar fell to a more than six-week low against the yen, dipping below a key technical level.
The dollar rebounded against the euro as traders doubted that any ECB shift in policy stance could strengthen the euro further.
The dollar fell to seven-month lows on Friday after data showed the U.S. economy created fewer jobs than expected last month.
The dollar rallied on Thursday after a report showed the U.S. economy created more private sector jobs than expected in May.
Panelbase said Prime Minister May's lead over the Labour Party increased to 15 points, giving the pound some respite from a plunge.
The dollar fell against most currencies on Tuesday, weighed by a drop in U.S.
Britain's pound was the only substantive mover among major currencies on Monday.
The dollar rose to a one-week high on Friday after upbeat U.S. gross domestic product data while Britain's pound slipped.