1. 
devalue
The pound has been devalued, so we’ll get more euros.
devalue /ˌdi:ˈvælju:; US / verb [transitive] 1 to reduce the value of the money of one country in relation to the value of the money of other countries The pound has been devalued against the dollar. ▶ dewaluować
2. 
devalue the currency
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