ᾔδεσαν (edesan)
ᾔδεσαν is an Ancient Greek form of οἶδα, meaning “to know”. It is the 3rd person plural pluperfect active indicative.
Found 88 times in the Ancient Greek texts on Socratos.
Where it is used
Thucydides, History of the Peloponnesian War 1.72.1: … αὶ ἅμα τὴν σφετέραν πόλιν ἐβούλοντο σημῆναι ὅση εἴη δύναμιν, καὶ ὑπόμνησιν ποιήσασθαι τοῖς τε πρεσβυτέροις ὧν ᾔδεσαν καὶ τοῖς νεωτέροις ἐξήγησιν ὧν ἄπειροι ἦσαν, νομίζοντες μᾶλλον ἂν αὐτοὺς ἐκ τῶν λόγων πρὸς τὸ ἡσυχάζειν τραπέ …
Cassius Dio Cocceianus, Historia Romana 41.8.4: ἑαυτοὺς ὠλοφύροντο· τάς τε γὰρ ἀρχὰς καὶ τὴν βουλὴν τούς τε ἄλλους τούς τι δυναμένους πάντας (οὐ γάρ που εἴ γέ τις αὐτῶν ὑπολειφθήσεται ᾔδεσανʼ τῆς τε πατρίδος ἅμα καὶ σφῶν ἐξισταμένους ὁρῶντες, καὶ μήτʼ ἂν ἐκείνους, εἰ μὴ πάνυ πολλὰ καὶ δεινὰ αὐτῇ ἐπήρτητο, φυγεῖν
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.