Against Christ, or an opposition Christ, a rival Christ. The word is used only by the apostle John. Referring to false teachers, he says (1 John 2:18,22; 4:3; 2John 1:7), "Even now are there many antichrists."
This name has been applied to the "little horn" of the "king of fierce countenance" (Daniel 7:24,25; 8:23-25).
It has been applied also to the "false Christs" spoken of by our Lord (Matthew 24:5,23,24).
To the "man of sin" described by Paul (2 Thessalonians 2:3,4,8-10).
And to the "beast from the sea" (Revelation 13:1; 17:1-18).
These dictionary topics are from M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition, published by Thomas Nelson, 1897. Public Domain, copy freely.
Easton, Matthew George. "Entry for 'Antichrist'". "Easton's Bible Dictionary".