Usage: 4 forms in 5 verses
Form Translated As     In Verse(s)
επιβούλων Plotters LXX.2Sam.2.16
επίβουλοσ a plotter LXX.1Sam.29.4LXX.1Kgs.5.4
επίβουλον plot LXX.2Sam.19.22
επίβουλοί plotters against you LXX.Hab.2.7

Liddell-Scott-Jones

ἐπίβουλος (epiboulos) a plotter G:N-M

ἐπίβουλος-ος, ον,

plotting against, τοῖς [Refs 6th c.BC+]: absolutely, treacherous, [Refs 5th c.BC+] (Lyric poetry); of persons, [Refs 5th c.BC+]. a deep designing fellow, [Refs 5th c.BC+]; ζῷα . [Refs 4th c.BC+] creatures which prey on man, [Refs 1st c.AD+]: comparative -ότερον, [Refs 6th c.BC+]: superlative -ότατος [Refs 1st c.AD+]. adverb [Refs 1st c.BC+].