Abbott-Smith Manual Greek Lexicon
ἀντί-χριστος (G500)
5 *† ἀντί-χριστος , -ον, ὁ , Antichrist, "one who assuming the guise of Christ opposes Christ" (Westc., Epp. Jo. , 70): I Jo 2:18 , 22 4:3 , II Jo 7 ; pl. I Jo 2:18 (cf. ψευδόχριστος , and v. MM, VGT , s.v.).†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain