ὄπα (opa)
ὄπα is an Ancient Greek form of ὅπη, meaning “where, in which way”.
It can also be a form of ὄψ, “voice”. It is the accusative singular feminine noun.
Found 66 times in the Ancient Greek texts on Socratos.
Where it is used
Apollonius Rhodius, Argonautica 4.72: Φρόντιν· ὁ δὲ ξὺν ἑοῖσι κασιγνήτοις ὄπα κούρης
Thucydides, History of the Peloponnesian War 5.77.6: αἰ δέ κα τῶν ἐκτὸς Πελοποννάσω τις ἐπὶ τὰν Πελοπόννασον γᾶν ἴῃ ἐπὶ κακῷ, ἀλεξέμεναι ἁμόθι βωλευσαμένως, ὅπᾳ κα δικαιότατα δοκῇ τοῖς Πελοποννασίοις.
Plutarch, Apophthegmata Laconica 69.43: Σπαρτιάτης ἐρωτηθεὶς εἰ ἀσφαλὴς ἡ εἰς Σπάρτην ὁδὸς εἶπεν ὁποῖος †καθίσῃς· οἱ μὲν γὰρ λέοντες βαδίζοντι ὅπα κα λέωντι, τὼς δὲ λαγὼς ἐπὶ τᾷ σκηνᾷ θηρεύομες.
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Liddell-Scott-Jones, A Greek-English Lexicon (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.