ἄκλειστος
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)
English (LSJ)
ον, Ion. ἀκλήιστος Call.Hec.2, Att. contr. ἄκλῃστος E.Andr.593, Th.2.93: (κλείω):—
A not closed or fastened, ll. cc., X.Cyr. 7.5.25, Nic.Dam.p.72 D., etc.