英文名称：Devaluation 中文名称：贬值
指单位货币价值减少，一单位本国货币兑换外国货币的能力下降。与之对应的是升值（appreciation）。
e.g. Meanwhile, the devaluation of the U.S. dollar and soaring oil prices would increase further global inflationary pressures.

A deliberate downward adjustment to a country's official exchange rate relative to other currencies. In a fixed exchange rate regime, only a decision by a country's government (i.e central bank) can alter the official value of the currency. Contrast to "revaluation". 

There are two implications for a currency devaluation. First, devaluation makes a country's exports relatively less expensive for foreigners and second, it makes foreign products relatively more expensive for domestic consumers, discouraging imports. As a result, this may help to reduce a country's trade deficit.