Simple Definition of treachery
: harmful things that are done usually secretly to a friend, your own country, etc.
: an act of harming someone who trusts you
Examples of treachery
a tale of treachery and revenge
<was furious that she revealed his secret and never forgave her for the treachery>
Origin of treachery
Middle English trecherie, from Anglo-French, from trecher, tricher to deceive, from Vulgar Latin *triccare — more at trick
First Known Use: 13th century
Rhymes with treachery
Seen and Heard
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