ἀμάχανος
From LSJ
οὐκ ἔστι γῆρας τοῦδε τοῦ μιάσματος → that pollution never wears out, that pollution can never grow old
French (Bailly abrégé)
dor. c. ἀμήχανος.
English (Slater)
ᾰμᾱχᾰνος
1 desperate, bewildering πολεμίων καμάτων ἐξ ἀμαχάνων (P. 2.19) τί δ' ἔθηκας ἀμάχανον ἰσχύν τ ἀνδράσι καὶ σοφίας ὁδόν pr. (Pae. 9.3) c. inf., impossible τοῦτο δ' ἀμάχανον εὑρεῖν (O. 7.25) τὸ δὲ νέαις ἀλόχοις ἔχθιστον ἀμπλάκιον καλύψαι τ' ἀμάχανον ἀλλοτρίαισι γλώσσαις (P. 11.26) ταῦτα θεοῖσι μὲν πιθεῖν σοφοὺς δυνατόν, βροτοῖσιν δ' ἀμάχανον εὑρέμεν (Pae. 6.53)