Dictionary entry

ἀντίχριστος

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

*† ἀντί-χριστος, -ον, ὁ,

Antichrist, "one who assuming the guise of Christ opposes Christ" (Westc., Epp. Jo., 70): I Jo 2:18, 224:3, II Jo 7; pl. I Jo 2:18 (cf. ψευδόχριστος, and v. MM, VGT, s.v.).†