Abbott-Smith Manual Greek Lexicon
ἐκ-πορνεύω (G1608)
1 † ἐκ-πορνεύω [in LXX chiefly for זָנָה , freq. of spiritual unfaithfulness ;] strengthened form of πoρνεύω , implying excessive indulgence; mid, to give oneself up to fornication : Ju 7 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain