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A traitor; a cheat. [Obs.] Treacher and coward both. Beau. & Fl.

Like a traitor; involving treachery; violating allegiance or faith pledged; traitorous to the state or sovereign; perfidious in private life; betraying a trust; faithless. Loyal father of a treacherous son. Shak. The treacherous smile, a mask for secret hate. Cowper.

Violation of allegiance or of faith and confidence; treasonable or perfidious conduct; perfidy; treason.

One who kills, or attempts to kill, by surprise or secret assault; one who treacherously murders any one unprepared for defense.

To kill by surprise or secret assault; to murder by treacherous violence. Help, neighbors, my house is broken open by force, and I am ravished, and like to be assassinated. Dryden.

The act of assassinating; a killing by treacherous violence.

To deliver into the hands of an enemy by treachery or fraud, in violation of trust; to give up treacherously or faithlessly; as, an officer betrayed the city. Jesus said unto them, The Son of man shall be betrayed into the hands of men. Matt. xvii. 22.

ody is apt to sink; a marsh; a morass. Appalled with thoughts of bog, or caverned pit, Of treacherous earth, subsiding where they tread. R. Jago.

ry out. [Obs.] Wandering in woe, and to the heavens on high Cleping for vengeance of this treachery. Mir. for Mag.

intercourse; transaction; as, to have dealings with a person. Double dealing, insincere, treacherous dealing; duplicity. -- Plain dealing, fair, sincere, honorable dealing; honest, outspoken expression of opinion.

Deceitful; hypocritical; treacherous. Milton.

Having a false heart; deceitful; treacherous. Sandys.

e used to pass a ditch or mount a rampart. Sin enters, not by escalade, but by cunning or treachery. Buckminster.

Not faithful or loyal, as to obligations, allegiance, vows, etc.; untrue; treacherous; perfidious; as, a false friend, lover, or subject; false to promises. I to myself was false, ere thou to me. Milton.

Hollow or unsound at the core; treacherous; deceitful; perfidious. Bacon. -- False"*heart`ed*ness, n. Bp. Stillingfleet.

Treachery; deceit; perfidy; unfaithfulness. Betrayed by falsehood of his guard. Shak.

In a false manner; erroneously; not truly; perfidiously or treacherously. "O falsely, falsely murdered." Shak. Oppositions of science, falsely so called. 1 Tim. vi. 20. Will ye steal, murder . . . and swear falsely Jer. vii. 9.

o the fact; inaccuracy; want of integrity or uprightness; double dealing; unfaithfulness; treachery; perfidy; as, the falseness of a report, a drawing, or a singer's notes; the falseness of a man, or of his word.

oeth not out of feigned lips. Ps. xvii. 1. -- Feign"ed*ly, adv. -- Feign"ed*ness, n. Her treacherous sister Judah hath not turned unto me with her whole heart, but feignedly. Jer. iii. 10. Feigned issue (Law), an issue produced in a pretended action between two parties for the purpose of trying before a jury a questio…

Characteristic of cats; sly; stealthy; treacherous; as, a feline nature; feline manners.