Usage: 5 forms in 5 verses
Form Translated As     In Verse(s)
μεγαλορρημονούντεσ speaking great words LXX.Ps.35.26
μεγαλορρημονήσησ have spoken great words LXX.Obad.1.12
εμεγαλορρημόνησεν spoke great words LXX.Ps.55.12
εμεγαλορρημόνησασ you spoke great words LXX.Ezek.35.13
εμεγαλορρημόνησαν they spoke great words LXX.Ps.38.16

Liddell-Scott-Jones

μεγαλορρημονέω (megalorrēmoneō) to speak great words G:V

μεγαλορρημονέω-ρρημονέω,

to be a boaster, [LXX+1st c.BC+]