Another word for unfaithfulness

Betrayal, especially of a moral obligation:
disloyalty, faithlessness, false-heartedness, falseness, falsity, infidelity, perfidiousness, perfidy, traitorousness, treacherousness, treachery. See continue, trust
Roget's II: The New Thesaurus Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
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"unfaithfulness." YourDictionary, n.d. Web. 14 January 2019. <https://thesaurus.yourdictionary.com/unfaithfulness>.
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unfaithfulness. (n.d.). Retrieved January 14th, 2019, from https://thesaurus.yourdictionary.com/unfaithfulness