ἀπφάριον
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)
[φᾰ], Dim. of ἀπφά, Xenarch.4.15, CIG3277 (Smyrna).