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noun

whistleblower

/ˈwɪsəlˌbloʊər/  ·  say it: WIS·uhl·BLOW·er

someone who exposes wrongdoing inside an organization

In Politics & Diplomacy

In more detail

1. (noun) a person who publicly reveals dishonest or illegal activities by a company or government organization

2. (noun) a person who blows a whistle to get attention or signal something

Examples

How to use whistleblower

Whistleblower is most commonly used in formal or journalistic contexts to refer to someone who exposes corruption, fraud, or wrongdoing within an organization, often at considerable personal risk. The term can also technically denote someone who physically blows a whistle, but this literal sense is rare. The figurative meaning has strong legal and ethical connotations.

Register: formal

Common phrases

Synonyms

informant · informer · truth-teller · exposer

Word family

whistle-blow (verb) · whistle-blowing (noun/gerund)

A common mistake

Learners sometimes use 'whistleblower' as a verb (e.g., 'he whistleblower the company'), when the correct verb form is 'blow the whistle' or the gerund 'whistle-blowing'.

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