whistle-blower

noun

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

Example Sentences

That tells us he may have been more than just a “whistle-blower.”

From The Daily Beast

Beijing, it appears, was able to cover its tracks while obtaining information from the so-called whistle-blower.

From The Daily Beast

Her prior experience as a Wall Street whistle-blower had not left her desirous of more tumultuous press attention.

From The Daily Beast

The difference between a leaker and a whistle-blower is important.

From The Daily Beast

What do an Israeli soldier, a Houston whistle-blower, and a Swiss border-patrol officer have in common?

From The Daily Beast

Nay, amid all the scurry the whistle blower even took a few turns, stepping short as he did so, in order to rest his legs.

From Project Gutenberg

Related Words

• informant
• informer