Usage: 3 forms in 7 verses
Form Translated As     In Verse(s)
αντιπρόσωπον facing LXX.2Sam.10.9
αντιπρόσωποι facing LXX.Exod.26.5LXX.Exod.36.12LXX.Ezek.42.3LXX.Ezek.42.8
in their facing off LXX.1Chr.19.10
αντιπρόσωπα facing LXX.Gen.15.10

Liddell-Scott-Jones

ἀντιπρόσωπος (antiprosōpos) facing G:A

ἀντιπρόσωπος-ωπος, ον,

with the face towards, facing, τοῖς πολεμίοις[Refs 5th c.BC+]; face to face, ἀντιπρόσωποςωποι μαχόμενοι[Refs 5th c.BC+]; of images, reflected, [Refs 4th c.BC+]; of winds, blowing in a contrary direction, [Refs]. adverb -πως[Refs 4th c.BC+] inHp.1.95 [Refs 4th c.BC+]

__II substantive ἀντιπρόσωποςωπον, τό, prow, [Refs 2nd c.AD+]