Unfaithfulness; lack of fidelity, loyalty, or honesty. Now archaic and rare.

Unfaithfulness, faithlessness.

Treachery, untruth; a falsehood.

As an attribute of persons: Falseness, deceitfulness, mendacity, faithlessness. Obsolete.

Deceitfulness, duplicity, imposture. Also quasi-concrete a deceit, an imposture.

False or treacherous conduct; treachery, fraud. Obsolete.

Unfaithfulness, treachery; = untruth, n. 1 (Common 1385–1450.)

Scottish. Disbelief, unbelief; unfaithfulness. Cf. mistroth, n. Obsolete.

The quality of being disloyal; unfaithfulness, falseness.

Lack of faith; infidelity. Obsolete.

Unfaithfulness. (Common 1545–1625.)

= disloyalty, n.

= disloyalty, n.

General attributive, as truth breach, truth world, etc.

Lack of fidelity; disloyalty, perfidy; unreliability, insincerity; untrustworthiness.

Intent to deceive; insincerity, dishonesty; faithlessness, disloyalty; treachery. Now frequently in in bad faith. Cf. good faith, n., Punic faith n.…

untrustworthy quality or character, faithlessness; (also) distrustfulness.

Unfaithfulness.