noun, plural treach·er·ies.
Origin of treachery
Examples from the Web for treachery
His treachery, however, had been skillfully concealed for years.The Castration of Alan Turing, Britain’s Code-Breaking WWII Hero|Clive Irving|November 29, 2014|DAILY BEAST
Through its wrenching, eventually exhausting series of betrayals, Game of Thrones asks, “Is treachery unavoidable?”Daenerys Goes to Washington: The Modern Politics of ‘Game of Thrones’|Jedediah Purdy|April 8, 2014|DAILY BEAST
There is a short fuse and a certain explosion at the end of this piece of treachery.
Immediately, the hardline settlers were quick to accuse their own elected officials of all sorts of treachery.
“[C]owardice is worse, treachery is worse, and simple selfishness is worse,” he said.
My husband is blind, Micheline unsuspicious, and Serge smiles quietly, as if he were preparing some treachery.Serge Panine, Complete|Georges Ohnet
Napoleon, overcome by all this misfortune and treachery which fell upon him, did what they required of him.The Empress Josephine|Louise Muhlbach
The act of treachery was consummated and the chief captured.South American Fights and Fighters|Cyrus Townsend Brady
To forget his treachery, he enters into a clandestine relationship with an actress of the town.The Social Significance of the Modern Drama|Emma Goldman
Treachery, or, perhaps worse, a kind of poised—and poisonous—mental judo?The Planet Strappers|Raymond Zinke Gallun
British Dictionary definitions for treachery
noun plural -eries
Word Origin for treachery
Word Origin and History for treachery
early 13c., from Old French trecherie "deceit, cheating" (12c.), from trechier "to cheat, deceive" (see trick).