ἐλεγκτός
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)
ή, όν,
A fit to be refuted or worthy of reproof, Hsch.
Greek (Liddell-Scott)
ἐλεγκτός: -ή, -όν, ῥηματ. ἐπίθετον τοῦ ἐλέγχω, ὃν δύναται νὰ ἐλέγξῃ ἢ ἀναιρέσῃ τις: «ἐλεγκτά· ἐπονείδιστα, ἐλέγχου ἄξια, εὐεξέλεγκται» Ἡσύχ.