Usage: 2 forms in 4 verses
Form Translated As     In Verse(s)
επιγνώμων arbitrator LXX.Prov.12.26LXX.Prov.17.27
of an arbitrator LXX.Prov.29.7
επιγνώμονεσ arbitrating LXX.Prov.13.10

Liddell-Scott-Jones

ἐπιγνώμων (epignōmōn) an arbitrator G:N-M

ἐπιγνώμων-γνώμων, ονος, , ,

arbiter, umpire, judge, c.genitive of things, [LXX+5th c.BC+]; ὀσφρήσιος, of the nose, [Refs 5th c.BC+] appraiser, [Refs 4th c.BC+]

__2. in plural, inspectors, [Refs 5th c.BC+]
__II. ={συγγνώμων}, pardoning, [Refs 2nd c.BC+].
__III. acquainted with, φύσεως, γυναικῶν, [Refs 1st c.AD+].

LSJ Scripture Refs: LXX.Prov.12.26