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.
The Canadian, Australian and New Zealand dollars all fell solidly on Thursday, tracking a drop in oil prices.
The dollar was on the defensive on Thursday, with investors low on incentives to buy the greenback.
The dollar struggled to recover ground against other major currencies on Tuesday.
The dollar slipped to a more than six-month low against a basket of currencies on Monday.
The dollar was on track to record its worst week since August on Friday, having given up almost all the gains made since Trump was elected.
The U.S. dollar rose against a basket of major currencies on Thursday.
The yen rose to its highest in two weeks and the Swiss franc hit a seven-week high against the U.S. dollar on Wednesday.
The euro surged more than 1 percent against a broadly weaker dollar on Tuesday, rising above $1.10.
The Canadian dollar hit its highest level in two weeks and the Australian dollar was at a 10-day high.
The U.S. dollar fell on Friday, easing from a roughly two-month high against the yen.
The New Zealand and Canadian dollars sank on Thursday as domestic concerns outweighed a bounce in oil prices for the currencies.
*New Zealand dollar down 1.5 pct on central bank outlook. President Donald Trump unexpectedly dismissed the Federal Bureau of Investigation chief James Comey. "This could be position-squaring in dollar/yen," said Mark McCormick, North American head of FX strategy at TD securities in Toronto.