Synonyms of whistle-blower

1 Syllable

fink, snitch, sneak, nark, rat

2 Syllables

stoolie, squealer, weasels, tattler, tipster, snitching, betrayer, traitors, weasel, tipsters, traitor, source, turncoat

3 Syllables

treasonist, weaseling, weaseled, intriguers, blabbermouth, canary, intriguer, backstabber, informant

4 Syllables

whistleblower, tattletale, double-crosser