Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of perfidy is as below...

Treachery :: Treachery (n.) Violation of allegiance or of faith and confidence; treasonable or perfidious conduct; perfidy; treason.

Falseness :: Falseness (n.) The state of being false; contrariety to 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..

Perfidy :: Perfidy (n.) The act of violating faith or allegiance; violation of a promise or vow, or of trust reposed; faithlessness; treachery..

Perfidious :: Perfidious (a.) Involving, or characterized by, perfidy..

Treason :: Treason (n.) Loosely, the betrayal of any trust or confidence; treachery; perfidy..

Falsehood :: Falsehood (n.) Treachery; deceit; perfidy; unfaithfulness.

Perfidious :: Perfidious (a.) Guilty of perfidy; violating good faith or vows; false to trust or confidence reposed; teacherous; faithless; as, a perfidious friend..

Perfidiousness :: Perfidiousness (n.) The quality of being perfidious; perfidy.

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