ους
From LSJ
τὸ κακὸν δοκεῖν ποτ' ἐσθλὸν τῷδ' ἔμμεν' ὅτῳ φρένας θεὸς ἄγει πρὸς ἄταν → evil appears as good to him whose mind the god is leading to destruction (Sophocles, Antigone 622f.)
Greek (Liddell-Scott)
ους: κατάληξ. γεν. πτώσ. τριτοκλίτ. ἀσυναιρέτ. κυρίων ὀνομάτων ἀντὶ -ος, Ἐπιγρ. Ἑρμιόνης, L. et F. 159e: Δαμωνους, Νικωνους, ἀντὶ Δάμωνος, Νίκωνος, ἐν ᾗ ὅμως ἐπιγραφῇ ἀναγινώσκονται καὶ τὰ κανονικά: Κάλλωνος, Ἀνθεμίωνος, Ἕρμωνος, Ξένωνος, Συναγωγὴ Λέξ. Ἀθησ. Κουμανούδη.