faithful

noun
1
staying with or supporting a particular person, organization or belief
وفادار, متعهد, امین
synonym loyal
2
people who believe in a religion; strong supporters of a political party who will not change their views
مؤمنان, پیروان, طرفداران ثابت قدم, هواداران سرسخت, دینداران, اهل ایمان
The president will keep the support of the party faithful.
3
not having a sexual relationship with anyone else
وفادار, پایبند
He had remained entirely faithful to his wife.
opposite unfaithful
4
true and accurate; not changing anything
دقیق, درست
a faithful copy/account/description
His translation manages to be faithful to the spirit of the original.
5
able to be trusted; that you can rely on
امین
my faithful old car