devaluation

US /ˌdiː.væl.juˈeɪ.ʃən/
UK /ˌdiː.væl.juˈeɪ.ʃən/
1.

sự mất giá

the action of reducing the rate at which money can be exchanged for foreign money:

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The devaluation of the dollar had a strong effect on the financial markets.