·adj Not believing; not giving credit.
II. Faithless ·adj Not observant of promises or covenants.
III. Faithless ·adj Serving to disappoint or deceive; delusive; unsatisfying.
IV. Faithless ·adj Not believing on God or religion; specifically, not believing in the Christian religion.
V. Faithless ·adj Not true to allegiance, duty, or vows; perfidious; trecherous; disloyal; not of true fidelity; inconstant, as a husband or a wife.