LSJ
ον, harmonious, συμφωνίας LXX 4 Ma. 14.3; concordant, πρὸς ἄλλα Iamb. Myst. 3.18.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
TBESG
concordant (MT)
Translators Brief lexicon of Extended Strongs for Greek based on Abbot-Smith, A Manual Greek Lexicon of the New Testament (1922) (=AS), with corrections and adapted by Tyndale Scholars