Treachery meaning

trĕch'ə-rē
Treachery is a betrayal of trust.

An example of treachery is when you cheat on your wife with her best friend.

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The act of violating the confidence of another, usually for personal gain.
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Willful betrayal of fidelity, confidence, or trust; perfidy.
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Deliberate, often calculated, disregard for trust or faith.
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The act or an instance of such betrayal.
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Betrayal of trust, faith, or allegiance; perfidy, disloyalty, or treason.
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An act of perfidy or treason.
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Origin of treachery

  • Middle English trecherie from Old French from trichier to trick probably from Vulgar Latin triccāre trick
    From American Heritage Dictionary of the English Language, 5th Edition
  • From Middle English trecherie, from Old French tricherie, trecherie, from tricher, trichier (“to cheat"), from Middle Dutch trek (“a trick"), from trekken (“to draw, play a trick on"). More at trick.
    From Wiktionary