The United States of America dollar index .DXY, which tracks the greenback against six rival currencies, was down 0.12 percent to 93.53,on Wednesday, August 9, after rising as high as 93.888 earlier in the session.
The Greenback also slipped 0.26 percent lower against the yen to 110.01 yen.Most Asian currencies stumbled, with the Korean won KRW= on pace for its biggest fall in nearly eight weeks.
Worries about increased U.S.-North Korea tension also weighed on the Canadian dollar, which weakened against its U.S. counterpart, despite higher oil prices and stronger-than-expected domestic housing data.
Sterling was little changed at $1.3 and near a 2-1/2-week low, as investors looked to key data due next week for clues on the health of the British economy as the country prepares to leave the European Union.
Weaker U.S. Treasury yields also helped the yen, boosting its appeal relative to the greenback.
U.S. Treasury yields fell on Wednesday, with yields on the benchmark 10-year note hitting a six-week low, as investors reached for safe-haven assets such as government debt, Reuters reports.