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whistleblower

or whis·tle-blow·er

[ wis-uhl-bloh-er, hwis- ]
/ ˈwɪs əlˌbloʊ ər, ˈʰwɪs- /
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noun
a person who informs on another or makes public disclosure of corruption, wrongdoing, problems, or secret information, especially within an organization.
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Sometimes whis·tle blow·er .

Origin of whistleblower

First recorded in 1965–70; whistle + blower

OTHER WORDS FROM whistleblower

whis·tle·blow·ing, whis·tle-blow·ing, noun, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use whistleblower in a sentence

British Dictionary definitions for whistleblower

whistle-blower

noun
informal a person who informs on someone or puts a stop to something
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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