ненадежность

From LSJ

κείνους δὲ κλαίω ξυμφορᾷ κεχρημένους (Euripides' Medea 347) → I weep for those who have suffered disaster

Source

Russian > Greek

ἀπιστία, ἀπιστίη, ἐπισφάλεια, ἀμφίβολον