faithful steadfast in affection or allegiance; "years of faithful service"; "faithful employees"; "we do not doubt that England has a faithful patriot in the Lord Chancellor"
unfaithful not trustworthy; "an unfaithful reproduction"
quality an essential and distinguishing attribute of something or someone; "the quality of mercy is not strained"--Shakespeare
constancy the quality of being enduring and free from change or variation; "early mariners relied on the constancy of the trade winds"
