Definition of treachery in English:


Syllabification: treach·er·y
Pronunciation: /ˈtreCH(ə)rē

noun (plural treacheries)

Betrayal of trust; deceptive action or nature: his resignation was perceived as an act of treachery the treachery of language
More example sentences
  • It is a story of intrigue, deception and treachery.
  • These are deliberate acts of treachery and are roundly condemned.
  • Any threat to this peace must be treated as an act of treachery - a traitor's action.
betrayal, disloyalty, faithlessness, unfaithfulness, infidelity, breach of trust, duplicity, dirty tricks, deceit, deception, chicanery, stab in the back, backstabbing, double-dealing, untrustworthiness;
treason, two-timing
literary perfidy


Middle English: from Old French trecherie, from trechier 'to cheat'.

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