The euro scaled a three-weak peak against the dollar on optimism about Greece's prospects after the government reshuffled its bailout team.
Data showing a seventh straight monthly decline in U.S. business spending plans knocked the dollar lower on Friday.
The dollar fell against most other major currencies on Thursday, while the euro rose on waning fears of a Greek default.
The dollar edged upward after a jump in U.S. home sales data lifted expectations Federal Reserve policymakers may soon hike interest rates.
The euro inched up against the dollar, pivoting from early losses following an ECB proposal.
The dollar rose broadly, with the euro sliding more than half a percent against the U.S currency, on growing concern that Greece may default on debts.
The dollar index traded slightly lower in late-afternoon Friday as the euro extended its gains.
The dollar was on track for its biggest daily decline against a basket of major currencies in nearly two weeks on Thursday.
The dollar traded lower across the board after an earlier rebound versus the euro amid the ECB's reiteration of its dovish stance on monetary policy.
One closely-watched financial analyst has launched a scathing attack on the country's finances and predicted another crisis for its currency.
The dollar tumbled after five straight days of gains, as investors took advantage of weaker-than-expected retail sales to lighten hefty positions.
The dollar rose against the euro in a continuation of last week's bets that the Fed will hike interest rates in the coming months.
The euro slumped for a fifth straight session against the dollar on Friday to a 3-1/2 week low as falling European interest rates.
The dollar traded higher on Wednesday after the release of the Federal Reserve's FOMC meeting minutes.
The greenback recovered as trading desks returned to full strength and underlying trends for its continued rise reappeared.
The dollar cut early losses but continued to feel the carry-over effects of a disappointing U.S. jobs report from Friday.
The dollar fell for a second straight day, as investors pared back hefty positions ahead of a U.S. non-farm payrolls report.
The dollar fell at the start of the second quarter on disappointing data on U.S. manufacturing and jobs growth.
The sharp decline in the Russian ruble against the dollar caused high-end residential rental prices in Moscow to tank some 16 percent last year.
The euro fell against the dollar on Tuesday, leaving the single currency on track for its worst quarter ever.