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disloyalty

[ dis-loi-uhl-tee ]
/ dɪsˈlɔɪ əl ti /
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noun, plural dis·loy·al·ties.

the quality of being disloyal; lack of loyalty; unfaithfulness.
violation of allegiance or duty, as to a government.
a disloyal act.
1 faithlessness, subversion.

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Origin of disloyalty

1400–50; late Middle English <Middle French desloiaute,Old French desleaute, equivalent to deslealdisloyal + -te-ty2
1. Disloyalty, perfidy, treachery, treason imply betrayal of trust. Disloyalty applies to any violation of loyalty, whether to a person, a cause, or one's country, and whether in thought or in deeds: to suspect disloyalty in a friend. Perfidy implies deliberate breaking of faith or of one's pledges and promises, on which others are relying: It is an act of perfidy to cheat innocent people. Treachery implies being secretly traitorous but seeming friendly and loyal: In treachery deceit is added to disloyalty. Treason is performing overt acts to help the enemies of one's country or government: Acting to aid a hostile power is treason.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for disloyalty

disloyalty
/ (dɪsˈlɔɪəltɪ) /

noun plural -ties

the condition or an instance of being unfaithful or disloyal
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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