whistleblower

Pronunciation

• Audio (AU)

  (file)

Noun

Singular whistle-blower

Plural whistle-blowers

1. (idiomatic) A whistle-blower is a person who reports an unlawful act to the authorities.
   • Synonym: snitch

   We owe it to a small group of brave whistle-blowers that we know about the infractions at all.