whistle-blower

noun

1. informal.
   a person who informs on someone or puts a stop to something

Example Sentences

Nearby sat the family of John Barnett, the former Boeing engineer and whistle-blower who died by suicide earlier this year in the midst of a Justice Department criminal investigation into the company.

From New York Times

Then, the OpenAI whistle-blower Daniel Kokotajlo speaks in one of his first public interviews about why he risked almost $2 million in equity to warn of what he calls the reckless culture inside that company.

From New York Times

The group published an open letter on Tuesday calling for leading A.I. companies, including OpenAI, to establish greater transparency and more protections for whistle-blowers.

From New York Times

It’s also the first lawsuit under the district’s amended False Claims Act, which encourages whistle-blowers to file claims of tax evasion against residents who they say are concealing where they actually live.

From New York Times

He asks the PM if he will ensure those "who do gag and silence whistle-blowers will no longer be allowed to work in the NHS"?

From BBC

Related Words

• informant
• informer