Lexical Definition

‎διαλλάσσω‎ diallássō (dee-al-las'-so) be reconciled G:V
from ‎διά‎ and ‎ἀλλάσσω‎

reconcile.

Usage: 5 forms in 6 verses
Form Translated As     In Verse(s)
διαλλαγήσεται he be reconciled LXX.1Sam.29.4
διαλλάσσων reconciling LXX.Job.12.20LXX.Job.12.24
διαλλάσσεταί reconciled LXX.Job.37.5
διαλλάξαι to reconcile LXX.Judg.19.3
διαλλάγηθι do be reconciled Matt.5.24

Abbott-Smith

δι-αλλάσσω [in LXX: I Ki 29:4 (רָצָה hithp.), I Es 4:31, al. ;]
1. to change, exchange.
2. to change enmity for friendship, to reconcile: pass., c. dat. pers., Mt 5:24. "The word denotes mutual concession after mutual hostility, an idea absent from καταλλ-," q.v. (Lft., Notes, 288; cf. Deiss., LAE, 17815; Cremer, 91, 632).†

Abbott-Smith References

Book Refs
1 Samuel 29:4
Matthew 5:24

Liddell-Scott-Jones

διαλλάσσω-άσσω,

Attic dialect διαλλάσσωάττω, future -ξω: perfect διήλλαχα [Refs 4th c.BC+]

__I middle, interchange, τὰς τάξεις [Refs 5th c.BC+]: absolutely, make an exchange, [Refs 5th c.BC+]
__II exchange, i.e.,
__II.1 give in exchange, τί τινι [Refs 5th c.BC+]; τινὰ ὑπέρ τινος one for another, [Refs 1st c.BC+]; or,
__II.2 take in exchange, δ. ἀετοῦ βίον take an eagle's life for one's own, [Refs 5th c.BC+]; δ. Μακεδονίαν change one land for another, i.e. pass through a land, [Refs 5th c.BC+]:—middle, τι ἀντί τινος [Refs 1st c.BC+]
__II.3 simply, change, alter, κελεύθους [Refs 5th c.BC+]
__II.4 absolutely, change, alter, [Refs 5th c.BC+]to be discordant, [Refs 5th c.BC+]; διαλλάσσωάττοντας different, opposed to ὁμοίους, [Refs 1st c.BC+]
__II.4.b depart this life, die, [Refs 4th c.BC+]
__II.5 change money, δ. τὸ δηνάριον [Refs 2nd c.AD+]
__III especially change enmity for friendship, reconcile one to another, τινά τινι [Refs 5th c.BC+]: rarely with accusative singular, make it up with one, διαλλάσσωάξεις με φιλάσας [Refs 3rd c.BC+]:—passive with future διαλλάσσωαχθήσομαι [διαλλάσσωαγήσομαι 5th-6th c.BC: Plato Philosophus “Respublica” 471a ">Refs 5th c.BC+]: perfect διήλλαγμαι [Refs 4th c.BC+]: aorist -ηλλάχθην[Refs 5th c.BC+]:—to be reconciled, to be made friends, A.[same place], [Refs 5th c.BC+]
__IV intransitive, with dative person et accusative of things, differ from one in a thing, εἶδος δ. οὐδὲν τοῖσι ἑτέροισι [διαλλάσσωάσσον τῆς γνώμης 5th c.BC: Thucydides Historicus 3.10: ">Refs 5th c.BC+]perfect participle διηλλαχώς differing, τῇ ἐγκλίσει AD [prev. cited]
__IV.2 excel, πολὺ δ. τῇ ἀρετῇ [Refs 4th c.BC+] — so,
__V passive, to be different, τοῖς εἴδεσι διηλλαγμένα [Refs 5th c.BC+]