ἄμᾰχ-ος · amach-os — LSJ
without battle: hence,
with whom no one fights, unconquerable, of persons, Hdt. 5.3, A. Pers. 856 (lyr.), Ar. Lys. 253, 1014 (lyr.); χεῖρες Pi. I. 6(5).41; δύναμις Pl. Mx. 240d, Isoc. 5.139: c. inf., πολύποδες . . πᾶν ὅτι οὖν φαγεῖν ἄ. Ael. VH 1.1, etc.: of places, impregnable, Hdt. 1.84: of things, irresistible, κακόν Pi. P. 2.76; κῦμα θαλάσσης A. Pers. 90: of feelings, ἄλγος Id. Ag. 733; φθόνος E. Rh. 456; ἄ. πρᾶγμα, of a woman whose beauty is irresistible, X. Cyr. 6.1.36; ἄ. φιλοφροσύνη Plu. QConv. 2.667d; ἄ. κάλλο
Act., not having fought, taking no part in the battle, X. Cyr. 4.1.16; ἄ. διάγειν to remain without fighting, Id. HG 4.4.9: ἄμαχον, τό, non-combatants, Ael. Tact. 2.2, cf. D.C. 53.12; ἄ. νίκη gained without fighting, Eun. VS p.472 B.
disinclined to fight, not contentious, 1 Ep. Tim. 3.3, Ep.Tit. 3.2, cf. Inscr.Cos 325; ἄ. ἐβίωσα Epigr. Gr. 387.6 (Apamea Cibotus).