δυσπρόσμαχος
From LSJ
ὦ ἀδελφέ, τοῦτόν γε μήτε κακῶς ποιοίης μήτε τούτῳ τῷ τρόπῳ βλάπτοις κλέπτων τὰ χρήματα → Brother, you should neither do this man bad nor harm him in this way, i.e. by stealing his money/stuff
English (LSJ)
ον,
A hard to attack, Plu.Tim.21.
German (Pape)
[Seite 688] schwer zu bekämpfen, Plut. Timol. 21.