ἰᾶσθαι
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)
Greek > English (Woodhouse Verbs Reversed)
(see also ἰάομαι): heal, make amends for, make good, make up for