[ dis-loi-uhl-tee ]
See synonyms for disloyalty on Thesaurus.com
noun,plural dis·loy·al·ties.
  1. the quality of being disloyal; lack of loyalty; unfaithfulness.

  2. violation of allegiance or duty, as to a government.

  1. a disloyal act.

Origin of disloyalty

1400–50; late Middle English <Middle French desloiaute,Old French desleaute, equivalent to deslealdisloyal + -te-ty2

synonym study For disloyalty

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.

Other words for disloyalty

Words Nearby disloyalty

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use disloyalty in a sentence

  • The disloyalty meme is, I'd expect, going to get louder.They're popping neck veins already and it's only July.

    Desperate...in July | Michael Tomasky | July 17, 2012 | THE DAILY BEAST
  • But while de Brus took nothing by his loyalty to Edward, he suffered for his disloyalty to Balliol.

    King Robert the Bruce | A. F. Murison
  • It was as if she were trying, passionately, to make up for some brief disloyalty, some lapse of tenderness.

    The Creators | May Sinclair
  • Her very resistance seemed disloyalty to him, as though another shared her with him and strove against him.

    The Woman Gives | Owen Johnson
  • And it was against their disloyalty and intolerance that the five conditions of the King's pardon were chiefly directed.

  • Still in the midst of this growing disloyalty the King was always spoken of with affection and respect.

    A short history of Rhode Island | George Washington Greene

British Dictionary definitions for disloyalty


/ (dɪsˈlɔɪəltɪ) /

nounplural -ties
  1. 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