Risk sensitive currencies were hit hardest, with the Australian dollar dropping almost 1% on Thursday to a more than two week low of $0.7057. It has lost 2% for the week, weighed also by a dovish central bank speech.
The kiwi fell by 1% on Thursday to $0.6577 and both Antipodeans sat just above their troughs on Friday. The Norwegian krone is nursing a 2.4% loss this week.
The euro fell 0.3% against the dollar overnight and has lost about 1% for the week so far as worries gather. The U.S. dollar has gained 0.8% against a basket of currencies so far this week, its largest weekly rise since late September.
Dollar demand pushed even the safe-haven yen lower on Thursday, though the Japanese currency is up 0.2% for the week.
The yen was last steady at 105.38 per dollar.