ἀμετάσμενος
From LSJ
δι' ἐρημίας πολεμίων πορευόμενος → he marched on without finding any enemy, his route lay through a country bare of enemies
Spanish (DGE)
que no se vuelve atrás, que no cambia de opinión ὁμολογῶ ἑκὼν καὶ ἀ. [μεμι] σθῶσθ[αι] παρ' ὑμῶν PFlor.285.7 (VI a.C.).