**Loyal**: Faithful allegiance to a person or cause.

**Faithful**: Steadfast in affection and support.

**Allegiant**: Showing loyalty to a specific authority or group.

**Devoted**: Committed to a particular task or purpose.

**Trustworthy**: Reliable in maintaining faithfulness and integrity.

**Steadfast**: Firmly loyal; unwavering in commitment.

**Unbetraying:** Not revealing secrets; trustworthy with information.