Synonyms of treachery

treachery

noun

ˈtre-chə-rē 

as in betrayal

the act or fact of violating the trust or confidence of another

was furious that she revealed his secret and never forgave her for the treachery

Synonyms & Similar Words

• betrayal
• treason
• deception
• perfidy
• disloyalty
• deceit
• infidelity
• backstabbing
• faithlessness
• abandonment
• lying
• falseness
• unfaithfulness
• double cross
• sellout
• falsity
• business
• two-timing
• duplicity
• desertion
• double-dealing
• guile
• fraud
• trickery
• informing
• two-facedness
• snitching
• talebearing

Antonyms & Near Antonyms

• loyalty
• allegiance
• fidelity
• devotion
• faithfulness
• fealty
• steadfastness
• reliability
• defense
• protection
• trustworthiness
• dependability
• staunchness
• shield
• safeguard

Example Sentences

Recent Examples of treachery

For his treachery in conspiring with Gwayne, Daemon claims Corlys as his own prisoner. — Amanda Whiting, Vulture, 10 Aug. 2026

Guides spoke of the monthlong siege that ended only because of the treachery of a local noble who turned on the sultan and allowed British troops to scale the walls. — Ishaan Tharoor, New Yorker, 2 July 2026

This is not treachery but the truest and noblest affection. — Ann Manov, Harpers Magazine, 23 June 2026

Peacock’s adventures in treachery The Traitors was the top dog, scoring five prizes including Best Competition Series and Best Host for Alan Cumming. — Erik Pedersen, Deadline, 3 June 2026