Disloyalty, unfaithfulness.

Disloyalty, unfaithfulness.

Unfaithfulness or disloyalty to a person, e.g. to a sovereign, lord, master, friend, lover; esp., in modern use, to a husband or wife, called more…

Disloyalty.

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

Now esp. Violation of allegiance or duty to one's sovereign, state, or government.

Absence or withdrawal of allegiance; disloyalty.