Exact Match:
- whistle blower
- an informant who exposes wrongdoing within an organization in the hope of stopping it; "the law gives little protection to whistleblowers who feel the public has a right to know what is going on"; "the whistleblower was fired for exposing the conditions in mental hospitals"
Synonyms:
- betrayer,
- blab,
- blabber,
- blabberer,
- blabbermouth,
- delator,
- fink,
- informer,
- narc,
- peacher,
- snitch,
- snitcher,
- spy,
- squealer,
- stool pigeon,
- stoolie,
- talebearer,
- tattler,
- tattletale,
- telltale