Perfidy Law and Legal Definition

Perfidy refers to deliberate or intentional breach of faith or calculated violation of trust. It can also be an act or an instance of treachery. Misusing a flag of truce during war in order to facilitate an attack, feigning of an incapacitation by wounds or sickness are examples of perfidy.

The following is an example of a caselaw defining Perfidy:

Perfidy means faithlessness, treachery, violation of a promise or vow or a trust reposed. [Streeter v. Emmons cty. Farmers press, 57 N.D. 438, 445 (N.D. 1928)]