ἀποθραύω
From LSJ
ἵνα οὖν μηδ' ἐν τούτῳ δῷ αὐτοῖς λαβήν (Photius, Fragments on the Epistle to the Romans 483.26) → so that he doesn't give them even here a handle (= an opportunity for refutation)
English (LSJ)
A break off, νεὼς κόρυμβα A.Pers.410; τοὺς ὑπερέχοντας τῶν σταχύων D.H.4.56: metaph., τῆς ἐλευθερίας τὸ κεφάλαιον Jul.Mis.356b; τοῦ ἑνὸς τὸ μερικόν Dam.Pr.51:—Pass., to be broken off, Arist.Pr.967b5, Arr.Tact.2.4: metaph., ἀποθραυσθῆναι τῆς εὐκλείας to be broken off from one's fair fame, make shipwreck of it, Ar.Nu.997.