εἰδείη (eideie)

εἰδείη is an Ancient Greek form of οἶδα, meaning “to know”. It is the 3rd person singular perfect active optative.

Found 78 times in the Ancient Greek texts on Socratos.

Where it is used

Thucydides, History of the Peloponnesian War 8.92.2: … ἄνθρωπος ληφθεὶς καὶ βασανιζόμενος ὑπὸ τῶν τετρακοσίων οὐδενὸς ὄνομα τοῦ κελεύσαντος εἶπεν οὐδὲ ἄλλο τι ἢ ὅτι εἰδείη πολλοὺς ἀνθρώπους καὶ ἐς τοῦ περιπολάρχου καὶ ἄλλοσε κατ’ οἰκίας ξυνιόντας, τότε δὴ οὐδενὸς γεγενημένου ἀπ’ α …

All forms of οἶδα (conjugation table)

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.