The dollar edged lower against a basket of major currencies on Monday as investors' risk appetite improved amid expectations that Ukraine would receive international aid, calming fears surrounding the heavily-indebted country.
The dollar index was down slightly at 80.218 after posting its first weekly gain in three weeks. Expectations that Ukraine would receive aid from Western donors helped stoke investors' risk appetite.
The greenback also fell sharply against the so-called commodity currencies - the Australian, Canadian and New Zealand dollars. The euro last traded flat near $1.37. The dollar was little changed against the yen above 102.
Investors demonstrated their risk appetite by buying U.S. stocks as well. The benchmark Standard & Poor's 500 stock index climbed to an all-time high earlier on Monday, and was last trading up 1.1 percent.