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

Inflamed by Ratansen’s adviser’s account of Padmavati’s beauty, Alauddin Khalji storms the fortress by treachery rather than valor. — Encyclopedia Britannica, 9 Apr. 2026

But Bateman's treachery also had a distinctly silly side. — Ryan Coleman, Entertainment Weekly, 8 Apr. 2026

Composure and confidence defined Marin’s victory as her competitor succumbed to the treachery of Amen Corner. — Gabby Herzig, New York Times, 4 Apr. 2026

Undocumented immigrants venture from Mexico, often underestimating of the treachery of the landscape. — Shi En Kim, AZCentral.com, 26 Mar. 2026