ἀκατάσχετος
From LSJ
ὀδοῦσι καὶ ὄνυξι καὶ πάσῃ μηχανῇ → tooth and nail | tooth, fang, and claw | in every possible way | by hook or by crook
English (LSJ)
ον, (κατέχω)
A not to be checked, ὁρμή Hipparch. ap. Stob.4.44.81, cf. Onos.1.3; δάκρυα D.S.17.38; of persons, uncontrollable, Phld.Piet.86, Apollon.Mir.40, Plu.Mar.44. Adv. -τως D.S.17.34, Plu.Cam.37.