blows the whistle

Alerts the authorities

To blow the whistle is to expose wrongdoing or call attention to a violation.

The phrase comes from referees using whistles to stop play for fouls.

A person who reports misconduct—especially within an organization—is a whistleblower: She blew the whistle on the company's illegal dumping practices.

The phrase often implies going public despite personal risk.

Related

reveal · smoking gun · disclose · go public · speak out · justice · backlash · accountability · ethics committees · ombudsman · transparency · vindication · tip-off · denounce · courage · report · dismissal · snitch

Opposites
disclosure vs. concealment

blows the whistlecovers up

conceals · hides · suppresses · keeps mum · stonewalls

accountability vs. complicity

blows the whistleenables

Makes something possible

abets · turns a blind eye · aids and abets · colludes · runs interference

action vs. inaction

blows the whistlestands by

Supports or awaits action

keeps one's head down · bites one's tongue · holds one's peace · plays along

Family

blow, blows, blew, blown, blowing, blower, whistle, whistles, whistled

Familiarity
Top 100,000
Profile
Known to kids · Used worldwide · Timeless · Everyday, not technical · Rated G