Vine's Expository Dictionary: View Entry
TDNT Reference: 4:729,605
μοιχαλίς moichalís, moy-khal-is'; a prolonged form of the feminine of G3432; an adulteress (literally or figuratively):—adulteress(-ous, -y).
The KJV translates Strong's G3428 in the following manner: adulterous (3x), adulteress (3x), adultery (1x).
an adulteress
as the intimate alliance of God with the people of Israel was likened to a marriage, those who relapse into idolatry are said to commit adultery or play the harlot
fig. equiv. to faithless to God, unclean, apostate
Strong's Number G3428 matches the Greek μοιχαλίς (moichalis),
which occurs 7 times in 6 verses
in the TR Greek.