ἀμετάστρεπτος
From LSJ
Ἡ δ' ἐμὴ ψυχὴ πάλαι τέθνηκεν, ὥστε τοῖς θανοῦσιν ὠφελεῖν → My soul died long ago so that I could give some help to the dead
English (LSJ)
ον,
A not to be diverted, Max.Tyr.11.5, cf. POxy. 705.62. Adv. ἀμετα-στρεπτί [ι-] or -εί without turning round, straight forward, φεύγειν X.Smp.4.50, Pl.Lg.854c, cf. R.620e, Ph.1.517, M.Ant.8.5 (v.l. -τρεπτί), etc.