- betray [v1] be disloyal 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; concept 384 —Ant. be faithful, be loyal, defend, protect, support betray [v2] divulge, expose information 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; concepts 44,60 —Ant. be quiet, hide, keep secret
New thesaurus. 2014.