ˈ ̷ ̷ ̷ ̷ ˌ ̷ ̷ ̷ ̷ noun
: one who reveals something covert or informs on another
a first-class whistle-blower whose allegations of fraud and waste threaten to torpedo the powerful Navy bureaucracy — J.S.Kunen
• whistle-blowing ˈ ̷ ̷ ̷ ̷ ˌ ̷ ̷ ̷ ̷ noun