faithful faithful /ˈfeɪθfəl/

adjective

1. () Steadfast in affection or allegiance  ( faithful )
   steadfast in affection or allegiance
    Years of faithful service
   years of faithful service
    Faithful employees
   faithful employees
    We do not doubt that England has a faithful patriot in the Lord Chancellor
   we do not doubt that England has a faithful patriot in the Lord Chancellor
   
2. () Marked by fidelity to an original  ( faithful , close )
   marked by fidelity to an original
    A close translation
   a close translation
    A faithful copy of the portrait
   a faithful copy of the portrait
    A faithful rendering of the observed facts
   a faithful rendering of the observed facts
   
3. Not having sexual relations with anyone except your husband or wife, or your boyfriend or girlfriend  ( faithful )
   not having sexual relations with anyone except your husband or wife, or your boyfriend or girlfriend
    He remained faithful to his wife
   he remained faithful to his wife
   

noun

1. () Any loyal and steadfast following  ( faithful )
   any loyal and steadfast following
   
2. A group of people who adhere to a common faith and habitually attend a given church  ( faithful , fold , congregation )
   a group of people who adhere to a common faith and habitually attend a given church
     The congregation gathered for Sunday worship.
   The congregation gathered for Sunday worship.