Faithfulness

[feyth-fuh l] /ˈfeɪθ fəl/

adjective
1.
strict or thorough in the performance of duty:
a faithful worker.
2.
true to one’s word, promises, vows, etc.
3.
steady in allegiance or affection; loyal; constant:
faithful friends.
4.
reliable, trusted, or believed.
5.
adhering or true to fact, a standard, or an original; accurate:
a faithful account; a faithful copy.
6.
Obsolete. full of ; believing.
noun
7.
the faithful.

/ˈfeɪθfʊl/
adjective
1.
having faith; remaining true, constant, or loyal
2.
maintaining sexual loyalty to one’s lover or spouse
3.
consistently reliable: a faithful worker
4.
reliable or truthful: a faithful source
5.
accurate in detail: a faithful translation
noun
6.
the faithful

adj.

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.

as a designation of Christians, means full of faith, trustful, and not simply trustworthy (Acts 10:45; 16:1; 2 Cor. 6:15; Col. 1:2; 1 Tim. 4:3, 12; 5:16; 6:2; Titus 1:6; Eph. 1:1; 1 Cor. 4:17, etc.). It is used also of God’s word or covenant as true and to be trusted (Ps. 119:86, 138; Isa. 25:1; 1 Tim. 1:15; Rev. 21:5; 22:6, etc.).