verb (v)

• speak out against(verb.communication)

  Example:
  He denounced the Nazis.
  

  source: wordnet30
• to accuse or condemn or openly or formally or brand as disgraceful(verb.social)

  Example:
  He denounced the government action.
  

  Synonym:
  brand, mark, stigmatise, stigmatize
  

  source: wordnet30
• announce the termination of, as of treaties(verb.communication)

  source: wordnet30
• give away information about somebody(verb.communication)

  Synonym:
  betray, give away, grass, rat, shit, shop, snitch, stag, tell on
  

  source: wordnet30
• To make known in a solemn or official manner; to declare; to proclaim (especially an evil).(verb)

  source: webster1913