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The euro's weakness was broad-based.
It hit its lowest since August 2012 against the British pound - 78.83 pence, with some investors positioning for hawkish minutes from the Bank of England later in the day.
Against the dollar, the euro fell to $1.3455, its lowest since November 2013 and investors expected more losses in coming days.
The euro was also down 0.2 percent at 136.45 yen.