Usage: 2 forms in 3 verses
Form Translated As     In Verse(s)
εκκαθαριείσ you shall clear it out LXX.Josh.17.18
εκκαθαριεί he shall clear out LXX.Isa.4.4
lord shall clear out LXX.Deut.32.43

Liddell-Scott-Jones

ἐκκαθαρίζω (ekkatharizō) to clear out G:V

ἐκκαθαρίζω-κᾰθᾰρίζω,

= {ἐκκαθαρίζωκαθαίρω}, [LXX].

LSJ Scripture Refs: LXX.Deut.32.43