Betrayal, especially of a moral obligation:
disloyalty, faithlessness, false-heartedness, falseness, infidelity, perfidiousness, perfidy, traitorousness, treacherousness, treachery, unfaithfulness. See continue, trustAn erroneous or false idea:
erroneousness, error, fallacy, falsehood, falseness, untruth. See correct, trueAn untrue declaration:
canard, cock-and-bull story, falsehood, fib, fiction, inveracity, lie2, misrepresentation, misstatement, prevarication, story, tale, untruth. (Informal) fish story, tall tale. (Slang) whopper. See true
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