whistleblower

Definitions of whistleblower
  1. noun
    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”
    synonyms: whistle blower, whistle-blower
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    type of:
    informant, source
    a person who supplies information
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