Synonyms of snitching

1 Syllable
narc, fink, sneak, nark, rat
2 Syllables
stoolie, squealer, tattler, ratting, tipster, snitcher, diming, betrayer, weasel, source, turncoat
3 Syllables
blabbermouth, canary, informant
4 Syllables
tattletale, whistle-blower, double-crosser