Treachery
Pronunciation : Treach"er*y
Part of Speech : n.
Etymology : [OE. trecher?e, trichere, OF. trecherie, tricherie, F. tricherie trickery, from tricher to cheat, to trick, OF. trichier, trechier; probably of Teutonic origin. See Trickery, Trick.]
Definition : Defn: Violation of allegiance or of faith and confidence; treasonable or perfidious conduct; perfidy; treason.
Be ware, ye lords, of their treachery. Chaucer. In the council chamber at Edinburgh, he had contracted a deep taint of treachery and corruption. Macaulay.
Source : Webster's Unabridged Dictionary, 1913