fealty
Definitions
A feudal tenant's or vassal's sworn loyalty to a lord.
Allegiance or faithfulness to a person, cause, or belief.
Examples
The knights swore an oath of fealty to their king before heading into battle.
In the feudal system, vassals were expected to demonstrate absolute fealty to their lords.
The politician pledged his fealty to the party platform during the national convention.
Synonyms
allegiance loyalty fidelity devotion faithfulness homage duty
Antonyms
treachery disloyalty betrayal perfidy infidelity treason faithlessness