Definition of treachery in English:


Line breaks: treach|ery
Pronunciation: /ˈtrɛtʃ(ə)ri

noun (plural treacheries)

[mass noun]
1Betrayal of trust: many died because of his treachery [count noun]: his distaste for plots and treacheries
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.
1.1The quality of being deceptive: the treachery of language
More example sentences
  • However, they were to face the most chaotic world of deception and treachery that awaits for them.
  • The show reeks with tension, treachery, and posturing to gain favor.
  • They claim they can help companies place higher in your rankings, but sometimes they resort to treachery.


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

Definition of treachery in: