This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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v. To lessen the price or value of.

v. To think or speak of as being of little worth; belittle. See Synonyms at decry. See Usage Note at deprecate.

verb-intransitive. To diminish in price or value.

v. To reduce in value over time.

v. To belittle

v. To lessen in price or estimated value; to lower the worth of; to represent as of little value or claim to esteem; to undervalue.

verb-intransitive. To fall in value; to become of less worth; to sink in estimation.

To lessen the value of; bring down in value or rate: as, to depreciate goods or prices; to depreciate railroad stocks.

To undervalue or underrate; represent as of little value or merit, or of less than is commonly supposed; belittle.

Synonyms To lower.

Disparage, Detract from, etc. (see decry); to traduce, underrate, slur.

To fall in value; become of less worth: as, a paper currency will depreciate unless it is convertible into specie; real estate is depreciating.

v. belittle

v. lower the value of something

v. lose in value

"Appreciate, and not depreciate, is a cardinal point of the administration of radio broadcasting."

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depreciated    depreciates    depreciating   

diminish    fall    lessen    decrease   

discredit    disparage   

underrate    detract    lower    disparage    decry    traduce    decline    fall    drop    slump   

appreciate   

opening-day    one-world    government-issued    higher-yielding    conver    topflight    bimetallic    estimators    push button    interbank