- strict or thorough in the performance of duty: a faithful worker.
- true to one’s word, promises, vows, etc.
- steady in allegiance or affection; loyal; constant: faithful friends.
- reliable, trusted, or believed.
- adhering or true to fact, a standard, or an original; accurate: a faithful account; a faithful copy.
- Obsolete. full of faith; believing.
- the faithful,
- the believers, especially members of a Christian church or adherents of Islam.
- the body of loyal members of any party or group.
- having faith; remaining true, constant, or loyal
- maintaining sexual loyalty to one’s lover or spouse
- consistently reliablea faithful worker
- reliable or truthfula faithful source
- accurate in detaila faithful translation
- the faithful
- the believers in and loyal adherents of a religious faith, esp Christianity
- any group of loyal and steadfast followers
c.1300, “full of faith,” also “firm in allegiance,” from faith + -ful. Meaning “true to the facts” is from 1520s. The noun sense of “true believers” is from 1550s. Related: Faithfully; faithfulness. Old Faithful geyser named 1870 by explorer Gen. H.D. Washburn, Surveyor-General of the Montana Territory, in reference to the regularity of its outbursts.