to make (a person, currency etc) lower in value, poorer in quality etc

degrade, shame

to take away (from the credit, value etc of something)

take away a part; lessen

(to cause the value of a currency) to become less (especially in exchange for other currencies)

depreciate

to weaken, spoil, (something)

harm, hinder

(of supplies, sound etc) to come gradually to an end

decrease

to put another price on (something); to increase the exchange value of (money)

depreciate