verb (v)

• belittle(verb.communication)

  Synonym:
  deprecate, vilipend
  

  source: wordnet30
• lower the value of something(verb.change)

  Example:
  The Fed depreciated the dollar once again.
  

  Antonym:
  appreciate, apprise, apprize
  

  source: wordnet30
• lose in value(verb.change)

  Example:
  The dollar depreciated again.
  

  Synonym:
  devaluate, devalue, undervalue
  Antonym:
  appreciate, apprise, apprize, revalue
  

  source: wordnet30
• 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)

  source: webster1913
• To fall in value; to become of less worth; to sink in estimation; as, a paper currency will depreciate, unless it is convertible into specie.(verb)

  source: webster1913