ἀκαχμένος
From LSJ
καὶ οἱ ἀμαθέστατοι τῶν ἰατρῶν τὸ αὐτὸ σοὶ ποιοῦσιν, ἐλεφαντίνους νάρθηκας καὶ σικύας ἀργυρᾶς ποιούμενοι καὶ σμίλας χρυσοκολλήτους: ὁπόταν δὲ καὶ χρήσασθαι τούτοις δέῃ, οἱ μὲν οὐδὲ ὅπως χρὴ μεταχειρίσασθαι αὐτὰ ἴσασιν → the most ignorant of doctors do the same as you, getting themselves ivory containers, silver cupping instruments, and gold-inlaid scalpels; but when it's time to use those things, they haven't the slightest notion of how to handle them
English (LSJ)
η, ον, Epic part. (cf. ἀκή A),
A sharp-edged, ἀ. ὀξέϊ χαλκῷ Il.15.482, Od.1.99, al.; πέλεκυν . . ἀμφοτέρωθεν ἀ. 5.235; φάσγανον 22.80. II armed, c. dat., γένος σκυλάκων κυνόδουσιν ἀ. Opp.C. 1.476, cf. 3.252.