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Noun: whistleblower  'wi-sul,blow-u(r)
  1. An informant who exposes wrongdoing within an organization in the hope of stopping it
    "the law gives little protection to whistleblowers who feel the public has a right to know what is going on"; "the whistleblower was fired for exposing the conditions in mental hospitals";
    - whistle blower, whistle-blower

Derived forms: whistleblowers, whistle blowers, whistle-blowers

Type of: informant, source

Encyclopedia: Whistleblower