Usage: 4 forms in 6 verses
Form Translated As     In Verse(s)
διεφώνησεν dissented LXX.Exod.24.11
he did not dissent LXX.Josh.23.14
was perished LXX.1Sam.30.19
διεφώνησε perished LXX.1Kgs.8.56
διαπεφώνηκεν dissented LXX.Num.31.49
διαπεφωνήκαμεν we are perished LXX.Ezek.37.11

Liddell-Scott-Jones

διαφωνέω (diaphōneō) to dissent G:V

διαφωνέω-έω,

to be a discord, in Music, [Refs 4th c.BC+]; to be out of tune, [Refs 5th c.BC+]

__2 generally, disagree, [Refs 4th c.BC+]; διαφωνέωεῖ τι τῶν χρημάτων there is a discrepancy in the accounts, [Refs 5th c.BC+]:—passive, διαπεφώνηται it has been disputed, [Refs 1st c.BC+]
__3 fail to answer roll-calls, desert, [LXX]fail, [Refs 1st c.AD+] H.: metaphorically of promises, fail, be found wanting, [LXX]
__3.b to be lost, perish, [Refs 3rd c.BC+]; of plants or animals, [Refs 1st c.BC+]; διαπεφωνήκαμεν we are lost, [LXX]; to be lost, of things, [Refs 3rd c.BC+]; of books, [Refs 1st c.BC+]:—in perfect passive, [Refs 2nd c.BC+]

LSJ Scripture Refs: LXX.Exod.24.11LXX.Ezek.37.11