ἀπρόσβατος
From LSJ
Ἀναβάντα γὰρ εἰς τὴν ἀκρόπολιν, καὶ διὰ τὴν ὑπερβολὴν τῆς λύπης προσκόψαντα τῷ ζῆν, ἑαυτὸν κατακρημνίσαι → For he ascended the acropolis and then, because he was disgusted with life by reason of his excessive grief, cast himself down the height
English (LSJ)
Dor. ἀποτίβατος, ον,
A inaccessible, πέτραι Arist.HA563a5, cf. Plu.Alex. 58, Luc.Prom.1; ἀποτίβ. νοῦσος unapproachable, S.Tr.1030 (lyr.), cf. Max.Tyr.18.1.