loyal

Steadfast in allegiance to one's homeland, government, or sovereign.

Faithful to a person, ideal, custom, cause, or duty. synonym: faithful.

Of, relating to, or marked by loyalty.

True or faithful in allegiance; keeping faith or troth; constant in service, devotion, or regard; not false or treacherous: used especially of allegiance to the sovereign, government, or law, but applied to all other relations of trust or confidence.

Pertaining to or marked by allegiance or good faith; manifesting fidelity or devotion.