whistle-blower
or whis·tle blow·er
[hwis-uh l-bloh-er, wis-]
noun
a person who informs on another or makes public disclosure of corruption or wrongdoing.
RELATED WORDS
spy, hypocrite, renegade, deserter, conspirator, impostor, turncoat, informer, defector, blabbermouth, tattler, double-crosser, sneak, betrayer, squealer, source, fink, stoolie, snitch, tattletale
Origin of whistle-blower
First recorded in 1965–70
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for whistleblower
Contemporary Examples of whistleblower
Zaid said he was disappointed by the ruling in the whistleblower case.
Senior DOE Official Wants Probe Into Firing of Los Alamos DissidentCenter for Public Integrity
September 16, 2014
What does seem clear is that Dr. Thompson had no intention of being a whistleblower in the first place.
“This is what your bosses, the executives, are being evaluated for,” the whistleblower said.
But while UConn is treating Holt as a whistleblower, it appears her sorority sisters are treating her as a traitor.
Ernst, on the other hand, thought the NSA whistleblower was “a traitor.”
whistle-blower
noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Online Etymology Dictionary, © 2010 Douglas Harper