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Definition of whistleblower

whistleblower

/ˈwɪs.əlˌbloʊ.ər/
whis · tle · blow · er

Plural:whistleblowers
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whistleblower Lexical Profile

whistleblower Game Scores & Validity

• noun

1

A person, typically an employee or insider, who exposes illicit, unethical, fraudulent, or unsafe activities occurring within a public or private organization.

Example

"Federal laws protect the corporate whistleblower from retaliation after reporting financial fraud to regulators."

Synonyms
View all synonyms for whistleblower

Word Nuance & Usage

Unlike 'informant' or 'leaker,' which can carry neutral or negative connotations of secrecy or betrayal, 'whistleblower' typically implies acting in the public interest to expose institutional wrongdoing, and often carries specific legal protections.

Word Origin & Etymology

Coined in the 20th century from the idiom 'to blow the whistle on,' referring to the practice of civic police officers or sports referees blowing a whistle to halt an illegal action or foul.

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Whistleblower. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/whistleblower
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