Abbott-Smith Manual Greek Lexicon
ἀ-σύμφωνος (G800)
1 ** ἀ-σύμφωνος , -ον , [in LXX: Wi 18:10 , Da, LXX, Bel 15 *;] dissonant , discordant ; metaph., at variance : πρὸς ἀλλήλους , Ac 28:25 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain