See treachery in Webster's New World Roget's A-Z Thesaurus II
noun
Willful betrayal of fidelity, confidence, or trust:
perfidy, treacherousness, treason. See trustBetrayal, especially of a moral obligation:
disloyalty, faithlessness, false-heartedness, falseness, falsity, infidelity, perfidiousness, perfidy, traitorousness, treacherousness, unfaithfulness. See continue, trustAn act of betraying:
betrayal, double cross. (Slang) sellout. See trust
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