
die Abwertung
devaluation
The official reduction in the value of a currency in relation to other currencies.
Die Abwertung des Dollars machte Importe teurer.
The devaluation of the dollar made imports more expensive.
devaluation / disparagement
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devaluation
The official reduction in the value of a currency in relation to other currencies.
Die Abwertung des Dollars machte Importe teurer.
The devaluation of the dollar made imports more expensive.

disparagement
A lowering of the reputation, value, or importance of someone or something, often through negative criticism or contempt.
Seine ständigen kritischen Kommentare waren eine klare Abwertung ihrer Arbeit.
His constant critical comments were a clear disparagement of her work.
The word consists of the prefix 'ab-' (downward) and the noun 'Wertung' (evaluation). An 'Abwertung' (devaluation/disparagement) is therefore a lowering of a value. The ending '-ung' indicates that it is a noun derived from a verb ('abwerten' — to devalue/disparage).
Jede Kritik wurde von ihm als persönliche Abwertung empfunden.
He perceived every criticism as a personal disparagement.
You can recognize the meaning from the context. If it is about 'Währung' (currency), 'Geld' (money), or 'Devisen' (foreign exchange), the economic meaning is intended. If it is about 'Personen' (people), 'Leistung' (performance), 'Arbeit' (work), or 'Kommentare' (comments), the social, belittling meaning is meant.
Die Zentralbank kündigte eine Abwertung der nationalen Währung an.
The central bank announced a devaluation of the national currency.
In the meaning of a currency change, 'Abwertung' (devaluation) is a technical term from economics and finance.
Im Wirtschaftsstudium lernten wir über die Folgen einer Abwertung.
In economics class, we learned about the consequences of a devaluation.
In a social context, people often speak of 'die Abwertung einer Person' (the disparagement of a person), 'die Abwertung von Arbeit' (the devaluation of work), or 'eine verbale Abwertung' (a verbal put-down).
Solche abfälligen Bemerkungen sind eine klare Abwertung seiner Bemühungen.
Such derogatory remarks are a clear disparagement of his efforts.
depreciation
Both words can refer to a financial reduction in value. For a currency, Abwertung means an officially decided reduction in value relative to other currencies, while Wertverlust more generally describes a decrease that occurs over time. Use “Abwertung” for an official currency decision and “Wertverlust” for a general loss of value.

Die Regierung beschloss die Abwertung der Währung gegenüber dem Euro.
The government decided to devalue the currency against the euro.
Durch die lange Nutzung erlitt das alte Auto einen deutlichen Wertverlust.
The old car suffered a significant loss of value through years of use.