Treach"er*y (?), n. [OE.
trecherïe, trichere, OF. trecherie,
tricherie, F. tricherie trickery, from tricher to
cheat, to trick, OF. trichier, trechier; probably of Teutonic
origin. See Trickery, Trick.] 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.