STEP Greek Lexicon: σύμφωνος

σύμφωνος, -ον

(ούν, φωνή), [in LXX: Ecc.7:14 (עֻמָּה), 4Ma.7:7 4Mac 14:7 * ;]

agreeing in sound. Metaphorical, harmonious, agreeing: ἐκ συμφώνου (for exx. from π., see Deiss., BS, 255), by agreement, 1Co.7:5.†

(AS)