FA'ITHFULNESS, noun 1. Fidelity; loyalty; firm adherence to allegiance and duty; as the faithfulness of a subject. 2. Truth; veracity; as the faithfulness of God. 3. Strict adherence to injunctions, and to the duties of a station; as the faithfulness of servants or ministers. 4. Strict performance of promises, vows or covenants; constancy in affection; as the faithfulness of a husband or wife.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI