indelictus
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
in-dēlictus: a, um, adj.,
I not criminal, faultless, blameless, Att. ap. Fest. s. v. probrum, p. 229 Müll. (Fragm. Trag. v. 384 Rib.).
indēlictus, a, um (in, delinquo), irréprochable : Acc. Tr. 384.