The euro tumbled on Thursday after European Central Bank President Mario Draghi said the bank discussed a further interest rate cut and raised the possibility of further easing measures to counter weak inflation in the euro zone.
Europe's shared currency fell to a one-month low against sterling, a more than two-week trough versus the dollar, and a three-week low against the yen as Draghi gave a downbeat assessment of the region's economy.
The ECB held rates steady as expected at a meeting in Malta.
The ECB cut rates to rock-bottom levels over a year ago and has repeatedly said they have hit "the lower bound".
In a news conference, Draghi said it would review in December what more it could do to tackle the threat of weak inflation, adding that a further cut to the deposit rate was brought up and the ECB council was ready act.
In addition, the ECB chief also cited the euro's recent strength as a downside risk to the economy.