betrayal

the act or fact of violating the trust or confidence of another <the terrible betrayal of having her best friend reveal her confidences to others> Synonyms backstabbing, business, disloyalty, double cross, faithlessness, falseness, falsity, infidelity, perfidy, sellout, treachery, treason, two-timing, unfaithfulness Related Words abandonment, desertion; deceit, deception, double-dealing, duplicity, guile, two-facedness; fraud, informing, lying, snitching, talebearing, trickery Near Antonyms dependability, reliability, trustworthiness; defense, protection, safeguard, shield Antonyms allegiance, devotion, faithfulness, fealty, fidelity, loyalty, staunchness, steadfastness