blow the whistle

Hierarchy: 
Description: 
{{idiomatic|usually|with "on"}} To disclose information to the public or to appropriate authorities concerning the illegal or socially harmful actions of a person or group, especially a corporation or government agency.
Ngram Text: 
blow the whistle
Source: 
Wiktionary
Issue: 
0
Wiktionary tag: 
Ngram Count: 
3