ἀρρενόομαι
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 become a man, do the duties of one, Luc.Am.19; of a woman, πλέον τῆς φύσεως ἀ. Ph.2.328; φρόνημα ἠρρενωμένον ib.53; Astrol., of stars (cf. ἄρρην), become masculine, Heph.Astr.1.2, Ptol. Tetr.20.
