ἀπαρακόμιστος
From LSJ
διὸ καὶ μεταλάττουσι τὴν φυσικὴν χρῆσιν εἰς τὴν παρὰ φύσιν αἱ δοκοῦσαι παρθένοι τῶν εἰδώλων → therefore those professing to be virgins of the idols even change the natural use into the unnatural (Origen, commentary on Romans 1:26)
Spanish (DGE)
-ον
que no puede ser desviado, firme πίστις Cyr.Al.Ep.18 (1.1.1, p.113.30).