perbeatus
From LSJ
προγράψαντες οὖν τά τε θεωρήματα καὶ τὰ ἐπιτάγματα τὰ χρεῖαν ἔχοντα εἰς τὰς ἀποδείξιας αὐτῶν μετὰ ταῦτα γραψοῦμές τοι τὰ προκείμενα → having therefore written at the beginning the theorems and the postulates that are necessary for their proofs, we will then write out for you the propositions
per-bĕātus: a, um, adj.,
I very fortunate, Cic. de Or. 1, 1, 1.
perbĕātus, a, um, très heureux : Cic. de Or. 1, 1.
