verb
be disloyal
Synonyms: abandon, be unfaithful, bite the hand that feeds you, blow the whistle, bluff, break faith, break promise, break trust, break with, commit treason, cross, deceive, deliver up, delude, desert, double-cross, finger, forsake, go back on, inform against, inform on, jilt, knife, let down, mislead, play false, play Judas, seduce, sell down the river, sell out, stab in the back, take in, trick, turn in, turn informer, turn state’s evidence, walk out on
Antonyms: be faithful, be loyal, defend, protect, support
verb
divulge, expose information
Synonyms: blurt out, dime, disclose, evince, fink on, give away, inform, lay bare, let slip, make known, manifest, rat on, reveal, show, sing, snitch, spill, squeal, stool, tattle, tell, tell on, turn in, uncover, unmask
Antonyms: be quiet, hide, keep secret